Our pyrite cinder (acid-making by-product) is a professional additive for cement raw materials and admixtures. With raw ore sulfur content 20%–35% (cinder iron content ≥35% for better performance) and 10–50mm lump ore form, it stably replaces iron ore powder, corrects clinker composition, reduces production costs, and improves cement strength, perfectly adapting to large-scale cement production.
Product Overview
Pyrite cinder is a high-value by-product generated after pyrite is roasted for sulfuric acid production, mainly composed of Fe₂O₃, SiO₂, and Al₂O₃ — core components that match cement raw material requirements. As a cost-effective alternative to traditional iron ore powder in cement production, it is mainly used as cement raw material and admixture to correct the chemical composition of clinker, supplement iron content, and optimize the proportion of cement raw materials. Our pyrite cinder adopts 10–50mm lump ore specification, which ensures stable roasting performance during the cement clinker calcination process, avoids uneven heating caused by too fine particles, and reduces dust pollution. With raw ore sulfur content controlled at 20%–35%, the resulting cinder has an iron content of ≥35% (the higher the iron content, the better the effect of correcting clinker composition), which can effectively adjust the lime-silica ratio (LSF) and iron-alumina ratio (IM) of cement raw materials, improve clinker sintering performance, and further enhance the compressive strength of finished cement. It is widely used in large and medium-sized cement plants, realizing the recycling of industrial by-products and reducing production costs significantly.
Application Data & Strict Specifications (Based on Cement Industry Facts)
| Item | Specification & Application Parameter (Factual & Practical) |
|---|---|
| Main Usage | Cement raw material admixture; replaces iron ore powder, corrects cement clinker chemical composition, supplements iron content for clinker calcination |
| Raw Ore Sulfur Content (S) | 20%–35% (reasonable range for acid-making roasting, ensuring cinder quality) |
| Pyrite Cinder Iron Content (Fe) | ≥35% (optimal for correcting clinker composition; higher iron content = better performance) |
| Cinder Main Composition | Fe₂O₃ (main iron source), SiO₂, Al₂O₃ (matches cement raw material components) |
| Particle Size (Form) | 10–50mm (lump ore), stable for cement clinker roasting, no excessive dust, easy to transport and batching |
| Roasting Performance | Lump ore ensures uniform heating during calcination, avoids agglomeration, and stabilizes clinker quality |
| Applicable Cement Type | Portland cement, ordinary Portland cement, slag Portland cement (for large-scale cement production) |
| Recommended Addition Ratio | 3%–8% of cement raw material total weight (adjustable according to clinker composition requirements) |
Core Advantages (Customer-Oriented, Highlight Industry Value)
- Cost-Effective Iron Source: Replaces expensive iron ore powder, reducing cement raw material costs by 25%–35%, which is a key cost-saving raw material for cement plants.
- Excellent Clinker Correction Effect: Cinder iron content ≥35%, effectively supplements iron for cement clinker, adjusts LSF and IM ratios, improves sintering performance and clinker quality.
- Stable Roasting Performance: 10–50mm lump ore form ensures uniform heating during calcination, avoids dust pollution and uneven reaction, reducing clinker rejection rate.
- Industrial Waste Recycling: As an acid-making by-product, it realizes resource reuse, conforms to environmental protection policies, and helps cement plants achieve green production.
- Good Compatibility: Main components (Fe₂O₃, SiO₂, Al₂O₃) perfectly match cement raw materials, no adverse impact on cement strength and setting time.
Application Scenarios (Precise to Cement Production)
Widely used in large and medium-sized cement production, including but not limited to:
- Cement raw material batching: replaces iron ore powder to supplement iron content, correct clinker composition
- Cement admixture: mixed with clinker to optimize cement performance, improve compressive strength
- Clinker calcination auxiliary: promotes clinker sintering, reduces calcination energy consumption
- Green cement production: realizes recycling of industrial by-products, meets environmental protection requirements
FAQ
Q1: Why can pyrite cinder be used as cement raw material/admixture? A1: Pyrite cinder (acid-making by-product) is mainly composed of Fe₂O₃, SiO₂, Al₂O₃ — core components of cement raw materials. It can replace iron ore powder to supplement iron content, correct the chemical composition of clinker, and its lump ore form ensures stable roasting, which is suitable for large-scale cement production.
Q2: Why is raw ore sulfur content controlled at 20%–35%? A2: 20%–35% sulfur content is the optimal range for pyrite acid-making roasting: too low sulfur content reduces acid production efficiency, while too high sulfur content will lead to excessive residual sulfur in cinder, which affects cement clinker quality. This range ensures both acid-making benefits and cinder applicability for cement.
Q3: What is the advantage of 10–50mm lump ore over powder? A3: 10–50mm lump ore avoids excessive dust during transportation and batching, and ensures uniform heating during cement clinker calcination — preventing agglomeration and uneven reaction, which is more suitable for large-scale cement kiln production than powder.
Q4: How does pyrite cinder affect cement strength? A4: With iron content ≥35%, pyrite cinder corrects clinker composition, improves clinker sintering quality, and further enhances the compressive strength of finished cement (tested in actual production, cement 28-day compressive strength can be increased by 5%–8%).
Ready to enhance your surface treatment processes with our Iron Sulfide Sand For Abrasives? Get in touch with us today for a quote or to learn more about our products.
Email: c32917930@gmail.com
Whatapp/Wechat/phone:+86 18006417081
Website: https://www.tlbncn.com/
Address:No. 402, Building 9, No. 2899, North Section, Tongdu Avenue, Xihu Town, Tongguan District, Tongling City, Anhui Province
related products
We have been specializing in non-ferrous metals since 1999
-
Leave a message!
Leave a message!