Supply you with High pure low heavy metal and particle size is finer Manganese

Product Description:

The Fine Chemical Manganese Salt (manganese carbonate) product is a high-quality chemical compound that is widely used in various industries due to its versatile properties and applications. This product is known for its exceptional purity and consistency, making it a preferred choice for many customers.

Product feature :

High pure low heavy metal and particle size is finer 300mesh ,45um ,50 um  Manganese Carbonate power

Appearance: The Fine Chemical Manganese Salt is characterized by its light pink or light brown powder form. This distinctive appearance makes it easy to identify and differentiate from other chemical compounds, ensuring accurate usage and handling.

Boiling Point: The Fine Chemical Manganese Salt does not have an applicable boiling point, as it is typically used in solid form. This property indicates that the product is stable and does not undergo significant changes in its physical state under normal operating conditions.

Production :

Technical Parameters:

Applications:

Customization:

Product Customization Services for Fine Chemical Manganese Salt

Brand Name: SLQ-MC90-FG

CAS NO: 598-62-9

Model Number: SLQ

Place of Origin: CHINA

Original: Hunan, China

Manufacturer :HUNAN SLQ TECHNOLOGY CO.,LTD

Keywords: High pure manganese carbonate,  ultra pure mangaese carbonate ,Phosphating grade manganese carbonate

Food grade manganese carbonate ,battery grade manganese carbonate ,Pharm grade manganese carbonate 

Production Process of High-Purity Manganese Carbonate

Raw materials: high-purity manganese chloride or high-purity manganese sulfate + ammonium bicarbonate

I. Core Reaction Equations

- Manganese sulfate route:
MnSO₄ + 2NH₄HCO₃ → MnCO₃↓ + (NH₄)₂SO₄ + CO₂↑ + H₂O

- Manganese chloride route:
MnCl₂ + 2NH₄HCO₃ → MnCO₃↓ + 2NH₄Cl + CO₂↑ + H₂O

II. Production Process of High-Purity MnCO₃

1. Raw Material Preparation (Preparation of High-Purity Manganese Solution)

- Dissolve high-purity MnSO₄·H₂O or high-purity MnCl₂·4H₂O in deionized water to prepare a solution with 50–150 g/L Mn²⁺.

- Adjust pH to 2.0–4.0 (dilute H₂SO₄ for MnSO₄; dilute HCl for MnCl₂), heat to dissolve, and filter to remove insoluble impurities.

2. Deep Purification (Key to High Purity)

- Heavy metal removal: Add Na₂S or (NH₄)₂S, maintain pH 6.0–7.0, stir for 1–2 h, then filter after standing.

- Calcium and magnesium removal: Add oxalic acid/oxalate (150–500% of theoretical amount), adjust pH 5.5–7.0

stir for 1–3 h, then filter.

- Or add Ca/Mg complexing agent (EDTA, etc.) at pH 4.0–6.0, then perform fine filtration after complexation.

3. Carbonation Precipitation (Core Reaction)

- Prepare saturated or 15–25% NH₄HCO₃ solution, and add it slowly by concurrent flow into the manganese solution.

- Temperature: 30–60°C (preferably 40–50°C), stir for 1–3 h.

- Endpoint control: pH 6.5–7.5, residual Mn²⁺ < 0.1 g/L (equimolar reaction).

- Maintain a closed / slight positive pressure throughout the reaction to reduce NH₃ volatilization and CO₂ escape.

4. Solid-Liquid Separation

- Centrifuge or vacuum filter to obtain MnCO₃ filter cake.

- The filtrate containing (NH₄)₂SO₄ or NH₄Cl can be recycled.

5. Washing (Removal of Soluble Impurities)

- Wash with deionized water at 80–100°C at a solid-liquid ratio of 1:5, 2–3 times, 40–80 min each time.

- Final wash with anhydrous ethanol once to accelerate drying and prevent agglomeration.

6. Drying and Pulverization

- Vacuum / hot air drying: 80–95°C for 4–16 h until moisture < 0.5%.

- Jet mill and sieve to obtain high-purity MnCO₃ (purity ≥ 99.9%).

III. Key Process Points (Guarantee of High Purity)

- Raw materials must be electronic-grade / high-purity grade to avoid impurity introduction.

- Maintain closed system and anti-oxidation throughout the process, as Mn²⁺ is easily oxidized to Mn⁴⁺.

- Concurrent feeding with controlled temperature and pH ensures uniform particle size and low impurities.

- Hot water + ethanol washing thoroughly removes Cl⁻/SO₄²⁻ and NH₄⁺.

IV. Comparison of Two Routes

- Manganese sulfate route: Byproduct (NH₄)₂SO₄ (easily crystallized and recovered), low Cl⁻ content, suitable for lithium battery materials.

- Manganese chloride route: Byproduct NH₄Cl (high solubility, slightly harder to recover), lower cost, suitable for general high-purity applications.

Packing and Shipping:

Product Packaging:

The Fine Chemical Manganese Salt product is carefully packaged in airtight, moisture-resistant containers to ensure its quality and stability. Each container is labeled with product information, including the product name, batch number, and expiration date.

Shipping:

For shipping, the Fine Chemical Manganese Salt product is securely packed in sturdy boxes with appropriate cushioning material to prevent breakage during transit. We work with reliable shipping partners to ensure prompt and safe delivery of the product to your designated location.