CMC is used in mining industry as pellet binder and floating selection inhibitor. CMC is a component of the binder for mineral dust shaping, and the binder is an indispensable ingredient in pellet forming. It can improve the character of wet pellet, dry pellet and calcinated pellet. Due to its good binding property and pellet forming property, the green pellet with CMC has excellent antiknock performance, high compressive strength and dropping resistance. It can also increase the grade of pellet. CMC is adjusting agent in floating selection process, it is used as silicate gangue inhibitor, controlling the lead in copper and lead separating, sometimes it is used as dispersant for mineral mud.
Acid-Resistant CMC: The Optimal Assistant for Reducing Acid Consumption in Copper Ore Leaching
In the hydrometallurgical leaching process of copper ore (especially high-calcium-magnesium oxidized copper-cobalt ore), a large number of gangue minerals such as dolomite and magnesite react violently with sulfuric acid, resulting in a huge amount of invalid acid consumption, which greatly increases production costs. Our special acid-resistant carboxymethyl cellulose (CMC) is a professional auxiliary agent tailored for copper ore leaching. It is not a leaching agent, but a highly efficient gangue inhibitor, which can fundamentally solve the problem of excessive sulfuric acid consumption in ore leaching.
Working Principle
This acid-resistant CMC can achieve selective adsorption in strong acid leaching pulp (pH 1.5-2.5):
•Precisely wrap the surface of calcium-magnesium gangue minerals to form a stable protective film
•Block the side reaction between gangue and sulfuric acid, eliminate ineffective acid waste
•Ensure sulfuric acid fully acts on the leaching of copper minerals, without affecting the normal leaching efficiency and metal recovery rate
Core Advantages
✅ Dramatic Sulfuric Acid Saving
Reduce invalid sulfuric acid consumption by 27%-32% for high-calcium-magnesium copper ore, greatly cutting down acid purchase and transportation costs.
✅ Low Dosage, High Efficiency
✅ Wide Applicability
Perfectly suitable for heap leaching, tank leaching and stirring leaching processes of oxidized copper ore and copper-cobalt ore, especially for large-scale mining projects in DRC and other African regions.
✅ Safe & Environmentally Friendly
Non-toxic, non-polluting, no negative impact on subsequent extraction and electrowinning processes, compliant with international mining environmental protection standards.
Application Value
By reducing sulfuric acid consumption, our acid-resistant CMC helps mining enterprises optimize production costs, stabilize leaching system operation, improve overall economic benefits, and solve the core pain point of high acid consumption in copper ore leaching.
| TypeSpecifications |
OL6 |
OL9 |
OH6 |
OH9 |
OVH7 |
OL6-A |
OL6-G |
| (Granular) |
| Viscosity(mPa·s) |
100-250 |
400-600 |
1000-2000 |
5000-7000 |
≥7000 |
200-400 |
200-400 |
| Purity(%) |
—— |
≥98 |
| Degree of Substitution |
0.7-0.9 |
0.7-0.8 |
| pH |
6-10 |
6.0-8.5 |
| pH Value |
| Loss on Drying(%) |
≤10 |
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