YUJIANG INFO
What is Manganese Carbonate (MnCO?)
Manganese carbonate (MnCO?) is an important inorganic manganese salt. It exists in two main forms: natural rhodochrosite (less common) and synthetic manganese carbonate produced industrially, which is the mainstream in the market.
?? Four Main Types and Applications
Based on purity, impurity content, and physical properties, manganese carbonate is generally divided into four categories. Their core differences and applications are summarized below:
|
Type |
Main Characteristics |
Core Application Fields |
|
High-Purity MnCO? |
Extremely high purity (typically ≥99.9%), very low heavy metal and other impurities |
Electronic components, high-end soft ferrite magnets, precursors for high-performance catalysts |
|
Battery-Grade MnCO? |
High purity (typically ≥99.5%), strict control of K, Na, Ca, Mg, and uniform particle size distribution |
Key manganese source for lithium-ion battery cathode materials (e.g., lithium manganese oxide, lithium iron manganese phosphate) |
|
Industrial-Grade MnCO? |
Medium purity (typically 90–99%), lower cost, physical and chemical indicators meet industrial requirements |
Desulfurization catalysts, ceramic glazes and coloring, fertilizer additives, raw material for other manganese salts |
|
Feed-Grade MnCO? |
Meets feed hygiene standards, strictly controls arsenic, lead, cadmium, and other harmful heavy metals |
Trace element additive for animal feed, prevents manganese deficiency in livestock and poultry |
?? Main Production Methods
There are two primary industrial methods for producing manganese carbonate:
1. Chemical Synthesis (Mainstream Method):
Manganese sulfate solution reacts with carbonates (e.g., ammonium bicarbonate) to produce manganese carbonate precipitate. The process is relatively simple and cost-effective.
2. Electrolytic Method:
Uses electrolytic manganese as raw material, dissolved in acid and then reacted with carbonate. This method produces ultra-high purity manganese carbonate, but with higher energy consumption and cost.
?? Key Selection Criteria
When selecting manganese carbonate, the following indicators are critical:
· Purity: Determines product grade and application limits.
· Impurity Elements: A key factor in grading products. For example, battery-grade MnCO? strictly limits K and Na, while feed-grade MnCO? imposes strict heavy metal limits.
· Physical Properties: Includes particle size, particle size distribution, and specific surface area, which directly affect processing performance and electrochemical properties in downstream products (e.g., battery cathode materials).
?? Safety and Storage Notes
Manganese carbonate is a chemical substance and should be handled with care:
· Safety: Dust inhalation is harmful; may irritate eyes and skin. Protective equipment should be worn, and the work environment should be well-ventilated.
· Storage: Keep sealed in a cool, dry, and ventilated place to prevent moisture absorption, caking, or contact with acidic substances.
