Pyrite for Heavy Metal Wastewater Treatment

200mesh test 下载

Our pyrite powder with sulfur content ≥35% is an ideal raw material for sulfide precipitation method in heavy metal wastewater treatment. Proper 60–200 mesh fineness ensures fast reaction speed, can effectively remove Cu²⁺, Pb²⁺, Zn²⁺, Cd²⁺, Hg²⁺ by forming insoluble metal sulfide precipitates. Low cost, stable activity, easy dosing and solid-liquid separation, widely used in industrial sewage treatment projects.

Product Overview

Pyrite (FeS₂) is widely applied in industrial heavy metal wastewater treatment by sulfide precipitation process. Under hydrolysis and reaction in water environment, it releases active sulfide ions, which combine with heavy metal ions to form highly insoluble sulfide sediments.

Adopting controlled grinding and screening, 60–200 mesh grading with -200 mesh ≥70% guarantees fast dissolution and full reaction. Sulfur content ≥35% keeps sufficient chemical activity while maintaining excellent cost performance for continuous wastewater treatment operation.

Application parameter specification table

Item	Specification & Application Data
Main Application	Heavy metal wastewater treatment, sulfide precipitation process
Removable Heavy Ions	Cu²⁺、Pb²⁺、Zn²⁺、Cd²⁺、Hg²⁺
Sulfur Content	≥35% (balanced activity & cost)
Particle Size Range	60–200 Mesh
Mesh Grade	-200 Mesh ≥70%
Reaction Feature	Fast hydrolysis, rapid precipitation formation
Effect	Form insoluble metal sulfide, easy sedimentation & filtration
Suitable Industry	Mine wastewater, electroplating, smelting, chemical plant sewage

Core Advantages

Strong Heavy Metal RemovalCan efficiently precipitate copper, lead, zinc, cadmium, mercury and other heavy metal ions, meet discharge standard easily.
Optimized Particle Size for Fast Reaction60–200 mesh, -200 mesh ≥70%, moderate fineness avoids too slow reaction or too fine floating loss.
Balanced Sulfur Activity & CostS≥35% provides enough active sulfur source, much lower cost than sodium sulfide and other chemical agents.
Easy Solid-Liquid SeparationGenerated sulfide flocs are dense, settle fast, reduce sludge treatment difficulty.
Wide AdaptabilitySuitable for mining wastewater, electroplating wastewater, metallurgical and chemical heavy metal sewage treatment.

Applicable scene

Heavy metal-containing wastewater from mine beneficiation
Wastewater from electroplating plants and circuit board factories
Heavy metal wastewater from smelters and chemical plants
Advanced treatment of comprehensive wastewater in industrial parks

FAQ

Q1: How does pyrite remove heavy metals in wastewater?

A1: Pyrite releases active sulfide ions in water, reacting with Cu²⁺, Pb²⁺, Zn²⁺, Cd²⁺, Hg²⁺ to form insoluble metal sulfide precipitates, then separated by sedimentation and filtration.

Q2: Why choose 60–200 mesh with -200 mesh ≥70%?

A2: This particle size balance reaction speed and settling performance; coarse particle reacts slowly, over-fine powder is easy to suspend and difficult to settle.

Q3: Why sulfur content ≥35%?

A3: It ensures sufficient active sulfur for stable treatment effect, meanwhile keeps raw material cost at a competitive level for long-term dosing.

📦 Packaging & Storage

Packaging: 20kg composite paper bags (with moisture-proof lining) for small batches, 1000kg bulk bags (with pallets) for large orders, both designed to prevent moisture and leakage during transportation.
Storage: Keep in a dry and ventilated warehouse, avoid direct sunlight and rain. Do not store with strong acids or oxidants. The shelf life is 18 months when unopened; after opening, seal the remaining product promptly.

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