Welcome to CDC Stacks | Influence of an Organic Polymer in Ball-Mill Grinding of Quartz, Dolomite, and Copper Ore - 10545 | National Institute for Occupational Safety and Health
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Influence of an Organic Polymer in Ball-Mill Grinding of Quartz, Dolomite, and Copper Ore
  • Published Date:
    1/1/1985
Filetype[PDF - 7.63 MB]


This document cannot be previewed automatically as it exceeds 5 MB
Please click the thumbnail image to view the document.
Influence of an Organic Polymer in Ball-Mill Grinding of Quartz, Dolomite, and Copper Ore
Details:
  • Description:
    Research was done by the Bureau of Mines to determine the effect of a low-molecular-weight polymer on wet grinding of quartz, dolomite, and a copper ore. A 5-in ball mill equipped with a torque sensor for precise measurement of input energy was used for batch grinding tests. Grinding parameters were determined from size distribution data on the feed material and ground product. Zeta potential measurements were made to determine the effect of the polymer on the surface properties of the three materials, and a viscometer was used to measure the effect of the polymer on slurry viscosity. The addition of the polymer caused a sharp increase in the negative value of the zeta potential for all three materials, indicating that pronounced adsorption was taking place. At a constant slurry percent solids, addition of the polymer caused a similar reduction in slurry viscosity for each material. For quartz, dolomite, and the copper ore, grinding efficiency, as measured by kilogram of product per kilowatt hour passing a given screen size, was not affected by the addition of the polymer. However, the lowering in slurry viscosity caused by addi-tion of the polymer permits grinding at a higher slurry percent solids.

  • Supporting Files:
    No Additional Files