Part 1: Product Overview

Pig Iron Powder, also known as cast iron powder, is a metal powder product manufactured from pig iron (an iron-carbon alloy with a carbon content > 2%) through mechanical crushing, grinding, and sieving processes. Pig iron is an iron alloy with a carbon content exceeding 2%, which is fundamentally different from wrought iron (carbon content < 0.05%) and steel (carbon content between the two).

Our pig iron powder is produced from selected high-quality pig iron, using advanced grinding and sieving technology, offering a full range of products from 20 mesh to 200 mesh. It features high iron content (over 90%), strong reactivity, controllable particle size distribution, and outstanding cost performance. It is widely used in warm patches (hand warmers), chemical reduction, metal displacement, wastewater treatment, weighting materials, pharmaceutical dyes, food preservation, and other fields.

Core Value of Pig Iron Powder

As a high-carbon iron-based material, pig iron powder combines the reactivity of iron and the auxiliary function of carbon. It provides a unique cost-performance advantage in heating, reduction, and displacement applications, serving as an economical alternative to reduced iron powder.

Part 2: Core Advantages & Characteristics

High Carbon Content & Unique Reactivity

Pig iron powder has a carbon content > 2%, distinguishing it from reduced iron powder (carbon < 0.5%) and cast iron powder (carbon ~0.01%), delivering special reaction characteristics in high-carbon environments.

High Iron Content & Stable Performance

Iron content ≥ 90%, with high active ingredient content and stable reaction efficiency. Some grades reach 94% iron content and a hydrogen evolution volume of 200–300.

Controllable Particle Size & Complete Specifications

Available from 20 mesh to 200 mesh. Particle size distribution can be customized to meet process requirements for different applications.

Large Specific Surface Area & High Reactivity

The powder form provides a large specific surface area and high reaction activity, performing excellently in heating, reduction, and displacement reactions.

High Cost Performance & Cost Advantage

More competitively priced than reduced iron powder, with significant advantages in cost-sensitive fields such as warm patches and wastewater treatment.

Adjustable Apparent Density

Loose specific gravity adjustable from 2.0 to 4.5, satisfying density requirements for weighting, filling, and other applications.

Part 3: Main Application Fields

Thanks to its high activity, cost efficiency, and controllable particle size, pig iron powder is widely used in many fields from consumer goods to industrial production.

1. Warm Patches & Self-Heating Products (Core Application)

Pig iron powder is the core heating material for disposable warm patches (hand warmers).

Mechanism: Using iron's oxidizability, it reacts rapidly with oxygen in the air once unpacked, generating heat and maintaining around 45°C for several hours.

Advantages: Pig iron powder with ≥90% metallic iron can replace reduced iron powder in warm patches, effectively reducing costs.

Recommended Specification: 60–200 mesh, Fe 85–90%.

2. Rubber & Plastic Filling

Pig iron powder is used as a functional filler in the rubber and plastics industry.

Main Uses:

Weighting and filling for rubber and plastics

Enhancing product weight and texture

Adjusting product density

Recommended Specification: 80–200 mesh, loose specific gravity 2.0–4.5.

3. Food Preservation & Oxygen Scavengers

Pig iron powder acts as a "dual absorbent", absorbing both moisture and oxygen in the air.

Applications:

Food packaging oxygen scavengers/preservatives

Prevent oxidative deterioration of food

Extend food shelf life

Recommended Specification: 30–200 mesh, Fe 80–90%.

Typical Use: Small sachets placed in food packages use iron oxidation for oxygen absorption, achieving excellent preservation and anti-corrosion effects.

4. Chemical Reduction & Organic Synthesis

Pig iron powder is commonly used as a high-quality reducing agent in chemical production and laboratory processes.

Main Uses:

Reduction reactions in organic synthesis

Production of pharmaceutical and dye intermediates

Health products industry

Chemical industries including titanium dioxide

Recommended Specification: 30–200 mesh, Fe 80–90%.

5. Metal Displacement & Hydrometallurgy

Pig iron powder plays an important role as a displacement metal in hydrometallurgy.

Mechanism: Iron has a higher electronegativity than target metals (e.g., copper), enabling metal exchange at the reaction interface to extract metals from solution. A larger potential difference enhances displacement tendency.

Main Uses:

Extracting sponge copper from copper sulfate solution

Metal displacement in copper, nickel smelting and processing

Precious metal recovery

Recommended Specification: 60–200 mesh, Fe 70–90%.

6. Wastewater Treatment & Environmental Remediation

Pig iron powder is widely applied in wastewater treatment, removing pollutants via iron's reducibility and flocculation.

Applications:

Electroplating wastewater treatment

Tannery wastewater treatment

Paper-making wastewater treatment

Dyeing, chemical, ceramic and other industrial wastewater treatment

Mechanism: Micro-electrolysis produces nascent hydrogen and ferrous ions, which react with pollutants and form flocculent precipitates.

Recommended Specification: 120–200 mesh (water treatment grade), Fe 75–90%, C > 2%.

7. Weighting Materials

With high density and good flowability, pig iron powder is widely used for weighting and balancing.

Applications

Forklift, excavator, crane counterweights

Tower crane, hoist, electric shovel counterweights

Port machinery, ship loader/unloader counterweights

Ship ballast, dock floating vessel counterweights

Elevator counterweights, electrical & lighting base weights

Sports equipment weighting

Special Applications

Additive for heavy concrete and blast furnace refractory materials to improve wear resistance, high-temperature resistance, and erosion resistance

Static shielding and radiation-resistant materials

Oil well filter tanks, bridge weighting, water conservancy ballast

Recommended Specification

80–200 mesh, loose specific gravity 2.0–4.5.

8. Imitation Metal Effect for Crafts

Pig iron powder is used in craft manufacturing to provide metallic texture and weight.

Main Uses:

Imitation metal effect for handicrafts

Increasing product weight

Sculptures, ornaments and art products

Recommended Specification: 100–200 mesh, loose specific gravity 2.0–4.5.

9. Fireworks & Firecrackers

Pig iron powder is used as a special effect material in fireworks production.

Main Uses:

Special material for fireworks

Creating specific spark effects

Recommended Specification: 40–80 mesh or 80–120 mesh.

10. Magnet Manufacturing

Pig iron powder can be used in the production of magnetic materials.

Main Uses:

Raw material for magnet production

Magnetic material filling

Recommended Specification: Adjustable mesh, Fe 70–90%.

Part 4: Product Specifications & Technical Parameters

Product Series Table

Product Type	Specification (Mesh)	Fe Content (%)	Apparent Density	Main Applications
Warm Patch Grade	60–200 mesh	85–90	–	Warm bags, heating patches, disposable heating goods
Water Treatment Grade	120–200 mesh	75–90	–	Electroplating, tannery, paper, dyeing, chemical wastewater treatment
Fireworks Grade	40–80 mesh, 80–120 mesh	–	–	Fireworks and firecrackers
Chemical Reduction Grade	30–200 mesh	80–90	–	Titanium dioxide, pharmaceuticals, dyes, chemical reduction
Metal Displacement Grade	60–200 mesh	70–90	–	Cu/Ni smelting, hydrometallurgy, sponge copper production
Rubber & Plastic Filling Grade	80–200 mesh	–	2.0–4.5	Rubber & plastic filling and weighting
Craft Filling Grade	100–200 mesh	–	2.0–4.5	Imitation metal effect, weight increment for crafts
Magnet Grade	Adjustable	70–90	–	Magnet manufacturing
Oxygen Scavenger Grade	30–200 mesh	80–90	–	Food preservation, oxygen scavengers