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Send EmailCalcined Anthracite Coal, Coal Calcinate, Anthracite Recarburizer, 8029-10-5
CALCINED ANTHRACITE COAL
1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY
| Parameter | Information |
|---|---|
| Product Name | Calcined Anthracite Coal |
| Chemical Name | Calcined Anthracite Carbon, Carbon Additive |
| Other Names | Anthracite Recarburizer, Carbon Additive (Anthracite), Devolatized Anthracite, Coal Calcinate, Anthracite-based Carbon Additive |
| CAS Number | 8029-10-5 |
| EINECS Number | 269-111-1 |
| HS Code | 2701.11 |
| Appearance | Black, shiny, hard granules or powder |
| Odor | No characteristic mineral odor |
| Physical State (20°C) | Solid (granules/powder) |
2. WHAT IS CALCINATION?
Calcination is the process of heating a substance to high temperatures (typically 800-1500°C) in the presence or absence of air or oxygen to bring about physical and/or chemical transformation. This process removes volatile components, evaporates moisture, and makes the material purer, more stable, or more reactive.
2.1. Purpose of Calcination
| Purpose | Description |
|---|---|
| Removal of Volatile Matter | Moisture and volatiles are removed from coal, clay, metal oxides, etc. |
| Purification | Chemical impurities are eliminated |
| Structural Modification | Crystal structure of some minerals changes |
| Increased Reactivity | Metal oxides become more easily reducible |
3. DEFINITION OF CALCINED ANTHRACITE COAL
Calcined Anthracite Coal is a type of coal that has been heated to high temperatures (typically 1200-1500°C) in isolation from air to remove volatile matter and moisture, resulting in a high fixed carbon content. The term "calcined" means purified by heat treatment; as a result of this process, the coal becomes harder, more conductive, and has lower sulfur content.
4. CHEMICAL STRUCTURE
4.1. Molecular Structure
Calcined anthracite coal consists primarily of carbon (C) atoms arranged in a graphite-like but more disordered structure. During the high-temperature calcination process, volatile matter (compounds containing hydrogen, oxygen, nitrogen, and sulfur) is removed, and the bonds between carbon atoms are rearranged. This process increases the material's electrical conductivity and thermal stability.
Structural Features:
CALCINED ANTHRACITE COAL
|
High Carbon Structure
(90-95% Fixed C)
|
+----------------+----------------+
| | |
Disordered High Temperature Low Volatile
Graphite-like Calcination Matter
Structure (1200-1500°C)
4.2. Elemental Composition
| Component | Typical Value | Description |
|---|---|---|
| Fixed Carbon (C) | 90 – 95% | Main component; functions as carbon additive |
| Volatile Matter | ≤ 1.5% | Almost completely removed by calcination |
| Ash | 3 – 6% | Inorganic mineral residues |
| Sulfur (S) | < 0.25% | Low sulfur content; critical for quality steel |
| Moisture | ≤ 1.0% | Low moisture content |
| Phosphorus (P) | < 0.02% | Low phosphorus |
5. PHYSICAL AND CHEMICAL PROPERTIES
| Property | Value | Description |
|---|---|---|
| Appearance | Black, shiny, hard granules or powder | - |
| Odor | No characteristic mineral odor | - |
| Color | Black - gray | - |
| Fixed Carbon | 90 – 95% | - |
| Volatile Matter | ≤ 1.5% | - |
| Ash Content | ≤ 6.0% | - |
| Sulfur (S) | < 0.25% | - |
| Moisture | ≤ 1.0% | - |
| Density | 2.2 – 2.5 g/cm³ | - |
| Bulk Density | 0.8 – 1.2 g/cm³ | Particle size dependent |
| Electrical Conductivity | High | Increased by calcination |
| Thermal Conductivity | High | - |
| Particle Size | 0-1 mm, 1-3 mm, 3-8 mm | Customizable |
6. TECHNICAL SPECIFICATIONS (TYPICAL)
| Parameter | Specification |
|---|---|
| Fixed Carbon | ≥ 90.0 – 95.0% |
| Volatile Matter | ≤ 1.5% |
| Ash Content | ≤ 5.0 – 6.0% |
| Sulfur | ≤ 0.25% |
| Moisture | ≤ 1.0% |
| Phosphorus | ≤ 0.02% |
| Density | 2.2 – 2.5 g/cm³ |
| CAS Number | 8029-10-5 |
| EINECS Number | 269-111-1 |
7. PRODUCTION PROCESS
7.1. Calcination Process Flow
Raw Anthracite → Preparation (Crushing, Screening) → Calcination Furnace
(1200-1500°C, Isolated from Air)
↓
Cooling → Crushing/Screening → Calcined Anthracite Coal
7.2. Process Stages
| Stage | Description |
|---|---|
| 1. Raw Anthracite Selection | High carbon, low sulfur anthracite is selected |
| 2. Preparation | Crushing, screening, and washing to remove impurities |
| 3. Calcination | Heating at 1200-1500°C in furnaces isolated from air |
| 4. Volatile Matter Removal | Volatile components (H₂, CO₂, H₂O, etc.) are removed as gas |
| 5. Cooling | Controlled cooling to prevent thermal shock |
| 6. Crushing/Screening | Grinding to desired particle size |
8. APPLICATION AREAS
8.1. Steelmaking (Most Important Application)
| Application | Function | Details |
|---|---|---|
| Recarburization | Carbon adjustment | Used to add carbon to molten steel |
| Induction Furnaces | Carbon additive | Precise carbon content adjustment |
| Electric Arc Furnaces | Carbon source | Requires low sulfur and high fixed carbon |
| Carbon Content Adjustment | Quality control | Improves steel quality |
8.2. Foundry Industry
| Application | Function | Details |
|---|---|---|
| Graphitization Enhancer | Casting quality | In ductile iron and gray iron processes |
| Slag Reduction | Surface quality | Reduces slag formation, improves surface finish |
| Carbon Additive | Alloying element | Improves casting quality |
8.3. Electrode Manufacturing
| Application | Function | Details |
|---|---|---|
| Carbon Paste | Conductive material | Aluminum and ferroalloy production |
| Electrode Component | High conductivity | Increases electrical conductivity |
| Stabilizer | Low reactivity | Extends electrode life |
8.4. High Temperature Industrial Furnaces
| Application | Function | Details |
|---|---|---|
| Clean Carbon Source | Fuel | Clean combustion with low ash and sulfur |
| Refractory Furnaces | Carbon additive | Provides stable combustion |
| Heating Systems | Energy source | High temperature applications |
8.5. Refractory Materials
| Application | Function | Details |
|---|---|---|
| Carbon Filler | Refractory bricks | As carbon additive |
| Furnace Lining | Thermal insulation | High temperature resistance |
9. COMPARISON WITH OTHER CARBON ADDITIVES
| Additive Type | Fixed C (%) | Sulfur (%) | Volatile Matter (%) | Application Area |
|---|---|---|---|---|
| Calcined Anthracite | 90 – 95 | < 0.25 | < 1.5 | Steel, foundry, electrodes |
| Graphitized Petroleum Coke | 98 – 99 | < 0.05 | < 0.5 | Aluminum, high-quality casting |
| Calcined Petroleum Coke | 97 – 98 | < 0.5 | < 0.5 | General steel production |
| Natural Graphite | 85 – 95 | < 0.1 | < 1.0 | Lubricants, refractories |
10. SECTOR SUITABILITY TABLE
| Sector | Suitability | Description |
|---|---|---|
| Steelmaking | Mandatory | Recarburizer for carbon adjustment |
| Foundry | High quality | Graphitization and surface quality |
| Electrode Manufacturing | Conductive carbon | Carbon paste electrodes |
| Industrial Fuel | Clean combustion | Low ash/sulfur for high-temp furnaces |
| Refractory | Carbon additive | Refractory bricks and fillers |
| Chemicals | Limited use | Not directly in synthesis, as energy source |
| Agriculture | Not suitable | No direct use |
11. SECTOR MANDATORY USE SUMMARY
Sectors Requiring Mandatory Use
1. Steelmaking
-
Why mandatory? Used as recarburizer to precisely adjust carbon content in molten steel. Low sulfur and high fixed carbon are required, especially in induction furnaces and electric arc furnaces.
-
Alternatives? Petroleum coke and graphitized coke can be alternatives, but CAC offers more balanced performance in terms of cost, sulfur, and volatile matter.
2. Foundry Industry
-
Why mandatory? Used to improve casting quality, promote graphitization, and reduce slag formation. Preferred in ductile iron and gray iron processes.
-
Alternatives? Natural graphite or petroleum-based additives may be insufficient in some applications.
3. Electrode Manufacturing
-
Why mandatory? High conductivity and low reactivity are required for carbon paste electrodes used in aluminum and ferroalloy production. CAC provides these properties optimally.
-
Alternatives? Graphitized petroleum coke is used for high purity, but CAC is more economical and process-compatible.
4. High Temperature Industrial Furnaces
-
Why mandatory? Provides clean combustion due to low ash and sulfur content. Used as carbon source in refractory furnaces.
-
Alternatives? Raw coal or low-quality carbon additives reduce process efficiency and create environmental risks.
12. PACKAGING OPTIONS
| Packaging Type | Quantity | Material |
|---|---|---|
| Kraft Bag | 25 kg | PE-lined kraft paper bag |
| Fiber Drum | 50 kg | PE-lined fiber drum |
| Plastic Drum | 50 kg | HDPE drum |
| Big-Bag | 500 kg, 1000 kg | PE-lined PP woven bag |
| Bulk | 20-25 tons | Truck or container |
13. STORAGE AND SHELF LIFE
| Parameter | Condition |
|---|---|
| Storage Conditions | Store in a cool, dry, well-ventilated area |
| Container Requirements | Keep in moisture-proof containers |
| Moisture Protection | Store in dry environment |
| Shelf Life | 24 months under proper conditions |
| Stability Note | Not hygroscopic; resistant to moisture |
14. SAFETY AND TOXICOLOGY
| Parameter | Information |
|---|---|
| Acute Oral Toxicity | Low toxicity (inert material) |
| Skin Irritation | Mechanical irritant |
| Eye Irritation | Mechanical irritant |
| Inhalation | Dust may cause respiratory tract irritation |
| Carcinogenicity | Not classified as a carcinogen |
| Mutagenicity | Not mutagenic |
15. GHS CLASSIFICATION
| Hazard Class | Category | H-Statement |
|---|---|---|
| No significant hazard classification | – | – |
Signal Word: None
Hazard Pictograms: None
16. TRANSPORT INFORMATION
| Parameter | Information |
|---|---|
| UN Number | Not applicable (not dangerous goods) |
| Hazard Class | Not applicable |
| Packing Group | Not applicable |
| ADR/RID | Not regulated |
| IMDG | Not regulated |
| IATA | Not regulated |
17. OTHER NAMES AND SYNONYMS
| English Name | Description |
|---|---|
| Calcined Anthracite Coal | Standard trade name |
| Anthracite Carbon Calcined | Calcined anthracite carbon |
| Coal, Anthracite, Calcined | Customs and technical documentation |
| Calcined Anthracite | Shortened form; used in catalogs |
| Coal Calcinate | Used in metallurgy and refractories |
| Devolatized Anthracite | Volatile matter removed anthracite |
| Anthracite Recarburizer | Anthracite-based carbon additive (steel/foundry) |
| Carbon Additive (Anthracite) | Anthracite-derived carbon additive |
| CAC | Abbreviation |
18. QUICK REFERENCE TABLE
| Property | Value |
|---|---|
| CAS Number | 8029-10-5 |
| EINECS Number | 269-111-1 |
| HS Code | 2701.11 |
| Appearance | Black, shiny, hard granules or powder |
| Fixed Carbon | 90 – 95% |
| Volatile Matter | ≤ 1.5% |
| Sulfur | < 0.25% |
| Ash Content | ≤ 6.0% |
| Density | 2.2 – 2.5 g/cm³ |
| Particle Size | 0-1 mm, 1-3 mm, 3-8 mm |
| Shelf Life | 24 months |
| UN Number | Not applicable |
19. CRITICAL NOTICES
-
Calcined at high temperature; volatile matter has been removed
-
Low sulfur content (critical for steel quality)
-
High electrical conductivity
-
Resistant to moisture
-
Respiratory protection recommended for powder handling
-
More economical and balanced performance compared to other carbon additives
LEGAL DISCLAIMER
This Technical Data Sheet (TDS) is for informational purposes only and is prepared based on available technical data. The user is solely responsible for determining the suitability of the product for their specific application and for complying with all local, national, and international regulations. For complete safety, storage, handling, transport, waste, and regulatory compliance information, the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier must be consulted. This document does not substitute professional advice.
