Effective Sodium Carboxymethyl Cellulose for Pyroxene,Hornblende, Magnesium silicate Flotation.

Product Introduction

Sodium Carboxymethyl Cellulose (CMC) serves as an effective and environmentally friendly depressant and dispersant in mineral flotation. This water-soluble cellulose ether is widely recognized for its role in selectively depressing unwanted gangue minerals, such as silicate and carbonate minerals, thereby enhancing the separation efficiency of valuable minerals.

In practice, CMC adsorbs more strongly onto the surfaces of specific gangue minerals compared to target minerals. This selective adsorption hinders the gangue's floatability, allowing for a cleaner concentrate. Its application is particularly valuable in complex ores, where it improves selectivity and reduces the consumption of other reagents. As a biodegradable and non-toxic alternative to traditional inorganic depressants like sodium dichromate, CMC supports more sustainable mining operations. It is appreciated for its cost-effectiveness and its contribution to achieving higher-grade concentrates and improved recovery rates.

Product Advantage

Sodium Carboxymethyl Cellulose (CMC) serves as an effective and selective depressant for various gangue minerals, enabling cleaner separation of valuable minerals. It demonstrates a strong ability to suppress silicate minerals (like talc and fine silicates)  and carbonate minerals (such as dolomite) . This selective action occurs because CMC molecules adsorb more readily onto the surfaces of these specific gangue minerals. This adsorption, often through mechanisms like hydrogen bonding or "bridging" with metal ions (e.g., Mg²⁺ on dolomite) , makes the gangue surfaces more hydrophilic (water-attracting), preventing them from floating. Consequently, this leads to a higher-grade concentrate and improved recovery rates of the target minerals .

CMC offers significant practical and sustainability advantages. It is soluble in water, non-toxic , and, as a cellulose-based reagent, is biodegradable, making it an environmentally friendly alternative to some traditional inorganic depressants. Furthermore, it is known for its cost-effectiveness and can be highly efficient even at low dosages , which helps reduce overall reagent consumption and operational costs. Its application can also simplify processing flowsheets in certain separations, such as copper-molybdenum, contributing to more stable and efficient plant operation .

Technical Parameters

Product Uses

This product has flocculation effect on gangue and can control the influence of slime. The inhibition effect on pyroxene and hornblende is better than water glass, and it also has inhibition effect on magnesium silicate.

Packing Specification

25kg/bag