1.1 Structural and Morphological Characteristics

• Regular in form and excellent in water solubility: The product appears as white or slightly yellowish solid particles (particle size 20–80 mesh) or powder (particle size 100–200 mesh), with uniform particles, no caking, and no impurities. It dissolves rapidly, disperses quickly in ore pulp and wastewater, and can be completely dissolved within 30 minutes at room temperature (20–30℃) without prolonged stirring, meeting the demands for rapid on-site operation in mines.
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• Controllable Molecular Structure: According to the different process requirements of minerals, three types—anionic, cationic, and non-ionic—can be customized, with precise regulation of molecular chain length and charge density. This targets and solves solid-liquid separation challenges for various minerals (coal, metallic ores, non-metallic ores) and different processes (flotation, sedimentation, filtration), resulting in more targeted flocculation effects.
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• High stability and resistance to degradation: Featuring a stable molecular structure, it does not decompose easily under complex mining conditions (temperature 5–60℃, pH 3–11). It has excellent salt tolerance, capable of withstanding high concentrations of salts in ore pulp (such as sodium chloride, magnesium sulfate, etc.), and does not react with heavy metal ions or reagents in the ore pulp, ensuring stable and long-lasting flocculation effects.
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1.2 Core Performance Characteristics

• High-efficiency flocculation and fast sedimentation: It boasts extremely strong bridging adsorption capacity, enabling rapid adsorption of suspended solids (slime, slag, dust, etc.) in ore pulp to form dense and large flocs. The sedimentation rate is 20%-50% higher than that of ordinary PAM, greatly shortening sedimentation time, improving solid-liquid separation efficiency, and reducing the floor area of sedimentation tanks.
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• Low dosage and high cost-performance ratio: Compared with ordinary industrial PAM, the dosage of the mining-specific grade can be reduced by 10%-30%. The typical dosage is 0.1-10ppm (adjusted according to ore pulp concentration), which can achieve ideal flocculation and sedimentation effects, effectively reduce the chemical cost for mines and improve production efficiency.
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• Thorough solid-liquid separation and clear filtrate: The flocs formed after flocculation feature high strength and are not easily broken. They do not clog the filter cloth during filtration, resulting in a low moisture content of the filter cake (which can be reduced by 5%–10%). The clear filtrate can be directly recycled (e.g., for mine spraying and mineral processing water), realizing water resource recovery and meeting environmental protection requirements.
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• Strong compatibility and no secondary pollution: It can be used synergistically with common mining chemicals (such as flotation agents, depressants, and filter aids) without antagonistic effects; on the contrary, it can improve the overall treatment effect. The product itself is non-toxic and non-irritating, with no harmful residues after degradation, and will not cause secondary pollution to mining soil and groundwater, meeting national environmental protection emission standards.

1.3 Exclusive Adaptation Characteristics for Mineral Resources

• High resistance to turbidity and concentration: In response to the high suspended solid concentration (up to over 10,000 mg/L) and high turbidity of mine wastewater (ore pulp), it can rapidly capture fine suspended solids, solving the problems of incomplete flocculation and slow sedimentation of ordinary PAM. It is suitable for high-turbidity wastewater treatment in processes such as coal washing and metal ore flotation.
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• Acid and alkali resistance, anti-interference: It can function stably in acidic (pH 3-6) and alkaline (pH 8-11) ore pulp, unaffected by fluctuations in the pH value of mine wastewater. It can resist interference from heavy metal ions (copper, iron, lead, etc.) and organic matter in the ore pulp, ensuring stable flocculation effect.
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• Compatible with a variety of minerals: Featuring strong versatility, it can be widely applied in the mining and mineral processing of various minerals such as coal, iron ore, copper ore, bauxite, gold ore, and limestone ore. According to the pulp characteristics of different minerals, corresponding product models can be customized for enhanced adaptability.

• II. Classification by Product Application (Focusing on Core Links in the Mineral Industry)

  Solid polyacrylamide specially used in the mineral industry focuses on three core applications: solid-liquid separation, water purification, and resource recovery. It covers the entire process of mineral mining, mineral processing, tailings treatment, wastewater reuse, etc. Different types of products (anionic, cationic, non-ionic) are targeted to adapt to different process links. The specific applications are as follows, and the application effects can be intuitively presented with scene pictures:

  2.1 Anionic Solid Polyacrylamide (Core Uses: Sedimentation, Dewatering)

  Anionic PAM (molecular weight 8–20 million, hydrolysis degree 10%–30%), mainly used for pulp sedimentation, tailings dewatering, and wastewater clarification. It is suitable for solid-liquid separation scenarios in mines with high turbidity and high suspended solids, and is the most widely used type in the mineral industry.

  
  

  • Coal Industry: Coal Washing Wastewater Treatment: Used in the coal washing process to treat wastewater generated by jigs and dense medium separators. It rapidly flocculates coal slime particles in the water, achieving coal slime sedimentation and water recycling. It is also applied to coal slime dewatering to reduce the moisture content of filter cakes, facilitating the recovery and reuse of coal slime (e.g., as fuel or brick-making raw materials) and reducing pollution caused by coal slime stacking.
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  • Metal Ore Industry: Flotation Tailings Treatment: Used for the treatment of tailings after the flotation of metal ores such as iron ore, copper ore, and bauxite. It flocculates fine ore slag particles in the tailings slurry to accelerate sedimentation. The supernatant can be recycled for flotation operations, reducing water consumption. The settled tailings can be dewatered for convenient stacking, transportation, or comprehensive utilization.
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  • Non-metallic Mineral Industry: Wastewater Clarification: Used in the mining and processing of non-metallic minerals such as limestone, gypsum, and quartz. It treats wastewater generated from crushing and grinding, clarifies dust and fine mineral powder in the water, enables wastewater reuse, and prevents environmental pollution caused by wastewater discharge.
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  • Mine Underground Wastewater Treatment: Treat mine underground water inflow, flocculate suspended solids and sediment in the water, and clarify the water quality. The treated water can be used for underground spraying, dust suppression, or discharged up to standard, solving the problem of underground wastewater treatment.
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  • 2.2 Cationic Solid Polyacrylamide (Core Uses: Sludge Dewatering, Sludge Conditioning)

    Cationic PAM (molecular weight: 8–15 million, ionic degree: 10%–60%) is mainly used for mine sludge dewatering and sludge conditioning. For high-moisture mine sludge (such as coal slime and tailings sludge), it improves dewatering efficiency and reduces the moisture content of the filter cake.

    
    

    • Coal Sludge Dewatering: Used for the dewatering treatment of coal slime from coal washing plants and tail coal slime from coal preparation plants. By conditioning the properties of coal slime, it forms dense flocs suitable for equipment such as plate and frame filter presses, belt filter presses, and centrifugal dewatering machines, greatly improving dewatering efficiency. The moisture content of the filter cake can be reduced to 25%-35%, facilitating transportation and comprehensive utilization.
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    • Tailings Sludge Dewatering: Treats flotation tailings of metal ores and non-metallic ores, as well as sedimentation tank sludge. It regulates sludge viscosity, reduces filter cloth clogging during dewatering, improves dewatering speed, lowers sludge disposal costs, and reduces land resources occupied by sludge stacking.
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    • Sludge Treatment in Mine Sewage Treatment Stations: Used for biochemical sludge and physical-chemical sludge generated by mine sewage treatment stations. It regulates the fluidity and settleability of sludge to facilitate sludge dewatering and compliant disposal (such as landfill and incineration), so as to avoid secondary pollution caused by sludge.

    2.3 Non-ionic Solid Polyacrylamide (Core Applications: Complex Water Quality Treatment, Flotation Assistance)

    Non-ionic PAM (molecular weight 8-18 million, hydrolysis degree ≤5%), mainly used for complex water quality treatment and flotation assistance in mines, suitable for mine wastewater scenarios with high salt content, high organic matter, and large fluctuations in pH.

    
    

    • Treatment of Complex Mine Wastewater: Used for the treatment of high-salinity wastewater, heavy metal-containing wastewater, and organic matter-containing wastewater from mines. It flocculates fine suspended solids and colloidal particles in water, improves water clarification effect, and lays a foundation for subsequent advanced treatment (such as reverse osmosis and disinfection).
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    • Flotation Assistance: As an auxiliary agent in the flotation process of metallic ores and non-metallic ores, it enhances the adsorption capacity of flotation reagents, improves mineral recovery rate, is particularly suitable for flotation operations of fine-grained minerals, and reduces mineral loss.
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    • Mine groundwater treatment: Treat the groundwater extracted during mining operations, clarify sediment and suspended solids in the water, remove trace organic matter, and bring the groundwater up to standards for industrial or domestic use.

    2.4 Other Auxiliary Uses

    • Mine Dust Prevention: After dissolving solid PAM, prepare it into a dust-proof spray and spray it on the mining working faces and transportation road surfaces. This forms a protective film, reduces dust dispersion, improves the mine working environment, and lowers dust pollution.
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    • Mineral Bonding: Used in the production of mine briquettes and mine bricks as a bonding agent to enhance the strength of briquettes and mine bricks, reduce the breakage rate, and facilitate transportation and application.
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    • Tailings Filling: Used in mine tailings filling operations as an additive for filling materials to improve the strength and stability of the filling body, reduce leakage during the filling process, and ensure safe production in mines.

    • III. Product Specifications (Special Standards for the Mining Industry, Customizable)

      The specifications and parameters of solid polyacrylamide specially used in the mineral industry are strictly customized according to mine working conditions, ore types, and treatment processes. The following are the conventional standard specifications, covering core parameters such as form, molecular weight, ionic degree, physical and chemical properties, and packaging, with clear parameter ranges and testing methods to ensure the product adapts to the needs of different mineral scenarios:

      3.1 Basic Morphological Parameters

      Product Type	Appearance and Morphology	Particle size range	Color	Solubility (20℃)
      Anionic	Granular / Powdered	Granule: 20-80 mesh; Powder: 100-200 mesh	White / Slightly yellow	Completely dissolves within 30 minutes
      Cationic type	Granular / Powdered	Granule: 20-80 mesh; Powder: 100-200 mesh	White / Slightly yellow	Completely dissolves within 30 minutes
      Non-ionic type	Granular / Powdered	Granule: 20-80 mesh; Powder: 100-200 mesh	White / Slightly yellow	Completely dissolves within 30 minutes

      Note: The particle size can be customized according to user requirements. Powdered products dissolve faster and are suitable for small-dose, rapid-operation scenarios; granular products are easy to store and transport, making them suitable for large-scale usage scenarios.

      3.2 Core Performance Parameters (Key Indicators, Adapted for Mining Conditions)

      Parameter Name	Unit	Anionic Standard Value	Cationic Standard Value	Non-ionic Standard Value	Test Method
      Molecular Weight	ten thousand	800-2000 (customizable)	800-1500 (customizable)	800-1800 (customizable)	Ubbelohde viscometer method
      Ionicity / Hydrolysis Degree	%	Hydrolysis degree: 10-30	Ionicity: 10-60 (customizable)	Hydrolysis degree: ≤5	titration method
      Solid content	%	≥90	≥90	≥90	Drying-weighing method
      Dissolution time	min	≤30（20℃）	≤30（20℃）	≤30（20℃）	Stirring dissolution method
      flocculation settling velocity	mm/min	≥15 (Coal Slurry Water Test)	≥12 (Sludge Test)	≥13 (Complex Wastewater Test)	Sedimentation Test Method
      Moisture content of filter cake	%	≤35 (Coal Slurry Dewatering)	≤28 (Sludge Dewatering)	≤32 (Complex Sludge)	Filter-press weighing method
      Applicable pH range	-	3-11	3-10	2-12	pH test paper detection
      Temperature resistance range	℃	5-60	5-55	5-65	Constant Temperature Test Method
      Residual monomer content	mg/kg	≤500	≤500	≤500	High Performance Liquid Chromatography

      Note: Molecular weight, ionic degree/hydrolysis degree can be customized according to the user's actual working conditions (ore type, wastewater concentration, treatment equipment). For example, anionic type is used for coal washing (molecular weight: 12–18 million, hydrolysis degree: 20–25%); cationic type is used for metal ore sludge dewatering (molecular weight: 10–15 million, ionic degree: 30–40%).

      3.3 Physicochemical Performance Parameters

      Parameter name	unit	Standard value	Detection Method
      Bulk density	g/cm³	0.60-0.80	Bulk Density Method
      Moisture content	%	≤10	Drying and weighing method
      Ash content	%	≤5	Ignition method
      water solubility	-	Freely soluble in water, insoluble in organic solvents	Dissolution Test Method
      stability	-	Stored at room temperature for 12 months without significant performance degradation	Constant temperature storage test
      toxicity	-	Non-toxic and non-irritating, in compliance with the standard GB/T 17514-2017	Acute toxicity test

      3.4 Packaging Specifications (Suitable for Large‑scale Storage and Transportation in Mines)

      Packaging Type	Packaging material	Specification per package	Weight per package	Application Scenarios
      Packed in conventional woven bags	Laminated woven bag (lined with PE waterproof membrane)	45×75cm	25kg per bag	Small batch procurement, laboratory use
      ton bag packaging	High-strength laminated ton bag (lined with waterproof membrane)	100×120cm	1000kg per bag	Large‑scale procurement, on-site use in mines
      Custom Packaging	Waterproof woven bags, cartons, etc.	Customized as needed	5kg, 10kg, 50kg, etc.	For special requirements and use in small mines

      Note: The shelf life is 12 months. Store in a dry, well-ventilated, cool and dark place. Avoid moisture, direct sunlight, rain, extrusion and impact. Keep away from oxidizing agents, strong acids and strong alkalis to prevent caking and degradation of the product, which may affect its performance.

       

      

      IV. Product Quality Standards (Strictly Adapted to Mining Industry Specifications)

      Special solid polyacrylamide for the mineral industry strictly complies with relevant national and industrial standards. Combining the operational characteristics of the mineral industry, a stringent internal quality control system has been established. Full-process quality monitoring is implemented from raw material selection and production to finished product delivery, ensuring stable product performance and adaptability to the complex working conditions of mines. The specific quality standards are as follows:

      4.1 Quality Compliance Standards

      • National Standard:
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        • GB/T 17514-2017 *Water Treatment Chemicals—Polyacrylamide*: This standard specifies the classification, requirements, test methods, marking, packaging, transportation, and storage of polyacrylamide. It clarifies the core indicator requirements including molecular weight, solid content, residual monomer content, and dissolution time, serving as the core basis for product production and inspection.
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        • GB/T 22592-2014 *Water Treatment Chemicals—Anionic Polyacrylamide*: For anionic PAM, it specifies in detail its technical requirements, test methods, inspection rules, etc., with emphasis on refining indicators such as hydrolysis degree and flocculation performance, suitable for the treatment of high-turbidity wastewater in mines.
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        • GB/T 22627-2014 *Water Treatment Chemicals—Cationic Polyacrylamide*: For cationic PAM, it specifies requirements for indicators such as ionic degree, molecular weight, and filtration performance, which is suitable for mine sludge dewatering scenarios to ensure dewatering efficiency and filter cake quality.
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        • GB 5085.3-2007 *Identification Standards for Hazardous Wastes - Identification for Leaching Toxicity*: Ensure that no harmful components leach out from the product, that it does not cause secondary pollution to the mine environment after use, and that it meets environmental protection emission requirements.
      • Industry Standards:
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        • MT/T 1094-2008 *Technical Specifications of Polyacrylamide for Coal Preparation*: This standard is specifically formulated for polyacrylamide (PAM) used in the coal preparation process of the coal industry. It stipulates the technical requirements, test methods, and inspection rules of the product, and is applicable to scenarios such as coal washing wastewater treatment and coal slime dewatering, serving as an important basis for model selection in the coal industry.
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        • YS/T 1115.1-2016 *Polyacrylamide for Wastewater Treatment in Copper Smelting*: For the treatment of metal ore (copper smelting) wastewater, it specifies the performance indicators and testing methods of PAM, ensuring suitability for the treatment of wastewater with high heavy metal content and high concentration.
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      • Enterprise Internal Control Standards: Based on national and industrial standards, the requirements for key indicators are further enhanced, such as solid content ≥ 92%, residual monomer content ≤ 300 mg/kg, and dissolution time ≤ 25 minutes. Meanwhile, special testing indicators including ore pulp flocculation effect and sludge dewatering efficiency are added to ensure that product performance is superior to the industry average and meets the stringent demands of complex mine working conditions.

      4.2 Raw Material Quality Standards

      Raw materials are the core determinant of product quality. Strictly select high-quality raw materials, establish a raw material access and testing mechanism, and prevent unqualified raw materials from entering the site. The specific requirements are as follows:

      
      

      • Acrylamide monomer: High-quality industrial-grade acrylamide is selected, with a purity of ≥98%, free of impurities and odors, and a residual acrylonitrile content of ≤0.05%. This ensures sufficient polymerization, reduces the residual monomer content in the finished product, and meets environmental and safety requirements.
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      • Initiator: Environment-friendly initiators (such as ammonium persulfate and sodium bisulfite) are adopted, which leave no harmful residues and feature high initiation efficiency. They can ensure stable polymerization reactions, control the length and distribution of molecular chains, and improve the flocculation performance of the product.
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      • Other auxiliary materials: Auxiliary materials meeting national standards (such as regulators and stabilizers) are selected. They contain no toxic or harmful ingredients, have good compatibility with acrylamide monomers, do not affect the water solubility and flocculation effect of the product, and ensure the product functions stably under complex mining conditions.
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      • Raw material inspection: After each batch of raw materials enters the site, indicators such as purity, impurity content and stability shall be tested. Unqualified raw materials are strictly prohibited from entering the site, so as to guarantee product quality from the source.

      4.3 Quality Standards for the Production Process

      Strictly follow the production process of "raw material screening → ingredient mixing → polymerization reaction → granulation and drying → crushing and sieving → finished product inspection → packaging and warehousing", with clear quality control standards established for each step, as detailed below:

      
      

      • Ingredient Mixing: Mix acrylamide monomer, initiator, and auxiliary materials in precise proportions, with a mixing uniformity ≥99%. Control the temperature and pH value of the reaction system to ensure stable polymerization, avoiding uneven local reactions and uneven molecular chain distribution.
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      • Polymerization reaction: The aqueous solution polymerization process is adopted. The reaction temperature is controlled at 50-70℃, and the reaction time is adjusted according to the molecular weight of the product to ensure sufficient polymerization. The resulting polymer has uniform molecular chain length, stable charge density, and no residual unreacted monomers.
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      • Granulation and Drying: The colloid after polymerization is subjected to granulation treatment to achieve uniform particle size, and then enters the drying equipment. The drying temperature is controlled at 80-100℃, and the drying time is adjusted according to the particle size to ensure the product moisture content ≤10%, free of caking and deliquescence.
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      • Crushing and Sieving: Crush the dried granules and screen out products with corresponding particle sizes according to user requirements (20-80 mesh granules, 100-200 mesh powder). The sieving qualification rate is ≥99%. Impurities and agglomerated products are removed to ensure uniform particle size of the product.
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      • Intermediate Inspection: Intermediate inspections are conducted at each production stage. For example, molecular weight and charge density are tested after polymerization; moisture content and solid content are tested after drying; particle size distribution is tested after sieving. Unqualified products must be reprocessed to ensure quality compliance at every stage.。

      4.4 Finished Product Inspection Standards

      Before finished products leave the factory, sampling inspections shall be conducted for each batch of products with a 100% inspection coverage rate. Unqualified products are strictly prohibited from being delivered. The inspection items and qualification standards are as follows. Meanwhile, CMA/CNAS certified inspection reports can be provided to meet the requirements of mine environmental protection acceptance and quality audit:

      
      

      • Appearance Inspection: The product shall be white or slightly yellowish solid granules/powder with uniform particles, no caking, no impurities, and no peculiar smell. The color shall be uniform without obvious color difference; the particle size shall meet the user's requirements with an error ≤5%.
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      • Core Performance Testing: Core indicators including molecular weight, ionic degree/hydrolysis degree, solid content, residual monomer content, and dissolution time must meet the standard requirements for corresponding product types, with a deviation ≤3%; special indicators such as flocculation sedimentation speed and filter cake moisture content must meet the operational requirements of mine working conditions.
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      • Physical and chemical performance testing: Indicators such as bulk density, moisture content, ash content, water solubility, and stability must meet standard requirements. Among them, moisture content ≤ 10%, ash content ≤ 5%, and no significant performance degradation after 12 months of storage at room temperature, ensuring the product is easy to store, transport and use.
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      • Environmental and Safety Testing: The product is non-toxic and non-irritating, with a residual monomer content ≤ 500 mg/kg. Its leaching toxicity complies with the GB 5085.3-2007 standard, and no harmful components are released. It will not cause harm to the mine environment or personnel after use.
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      • Packaging Inspection: The packaging shall be intact, free from damage or leakage, and the label information shall be complete (including product name, specification, type, molecular weight, ionic degree/hydrolysis degree, production date, shelf life, manufacturer, contact information, implementation standards, etc.). The packaging material shall meet environmental protection requirements and achieve qualified performance in terms of moisture resistance, extrusion resistance and sun exposure resistance, ensuring that the product is not damaged during transportation and storage.

      4.5 Quality Traceability and After-sales Standards

      • Quality Traceability: A unique traceability code is established for each batch of products, recording details such as raw material batch, production process parameters, intermediate test results, finished product inspection reports, delivery date, and transportation information. Full-process traceability is achievable, facilitating the investigation and resolution of quality issues.
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      • After-sales Support: In the event of quality issues (such as substandard performance, damaged packaging, caking, etc.) after product delivery, customers may avail return and exchange services by presenting inspection reports and purchase certificates. Meanwhile, professional technical guidance is provided to assist customers with product selection, dissolution, and application. We resolve various on-site mining issues (including poor flocculation effect, low dewatering efficiency, etc.), adjust product parameters according to customer working conditions, and ensure optimal application results.

      • V. Multi-dimensional Image Display Instructions

        5.1 Product Detail Images

        
        

        • Particle Size Detail Chart:
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        • Comparison Chart of Flocculation Effect:
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        5.2 Product Packaging Diagram

        • Diagram of conventional woven bag packaging:
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        • Ton bag packaging diagram:
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