Method for changing pulping process of rod mill

A rod mill and pulping technology, applied in grain processing, etc., can solve problems such as water imbalance, waste of water resources, wear and tear on pipes and equipment caused by minerals

Inactive Publication Date: 2021-09-10
江苏恒丰能环科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the problem of sedimentation during transportation, the concentration of the ore slurry generally produced is low (in order to reduce the kinematic viscosity), and the sedimentation phenomenon is alleviated by increasing the flow rate and pressure (equivalent to hydraulic transport of minerals), resulting in excessive flow rate and minerals. Pipelines and

Method used

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  • Method for changing pulping process of rod mill
  • Method for changing pulping process of rod mill

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] Step 1. Experiment with the existing slurry production line of a phosphate rock factory in Shanxi. The specific operation process is as follows:

[0039] Through laboratory research, the optimal lubricating particle size of the phosphate rock is 15 μm, which is the average particle size d of the A component required for the phosphate rock to make pulp A is 15μm, then the average particle size of grinding d A It is 15μm phosphate rock powder (dry basis), which is directly added to the existing slurry for experimentation.

[0040] The experimental process is as follows:

[0041] (1) Preparation of Component A: According to this plan for actual production, extract 30wt% protoplasm, design d cp = 120 μm for classification (just to achieve A:B=4:6, ensuring that A reaches 12wt% of the total slurry), less than d cp = 120μm particles are ground to an average particle size d A = 15μm A component, test its angle of repose 26°; greater than d cp =120μm pa...

Example Embodiment

[0108] Example 2

[0109] Other steps are the same as in Example 1, except that the grinding particle size of component A is 10 μm.

Example Embodiment

[0110] Example 3

[0111] Other steps are the same as in Example 1, except that the grinding particle size of component A is 20 μm.

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Abstract

The invention provides a method for changing a pulping process of a rod mill. The process comprises the following steps of: taking out a material which accounts for more than 10 percent by weight of the total mass of raw pulp of the rod mill, and grading the material at a specific particle size dcp of 80 to 150 microns into a component A and a component B, so that the mass ratio of the component A to the component B is (1 to 9): (9 to 1); grinding the component A, enabling the average particle size of the ground component A to be 20 microns or below, and carrying out shaping friction on the component B to eliminate edges and corners; and mixing the component A and the component B which are treated in the above steps, and adding the mixture into the rest of the raw pulp of the rod mill. According to the method for changing the pulping process of the rod mill provided by the invention, the component A with high lubricity and the component B capable of increasing the gradation relation between the particle sizes are added into the original ore pulp, so that the ore pulp concentration is increased, and the whole method is mild in operation condition, environmentally friendly and low in cost.

Description

technical field [0001] The invention relates to the field of mineral processing and pulp transportation, in particular to a method for changing the pulping process of a rod mill. Background technique [0002] In the mining industry, minerals are often transported by short-distance pipelines, such as gold tailings, silver tailings, iron ore, phosphate rock, coal and other minerals that need to be transported from the tunnel to the processing site. If vehicles are used for transportation, manual loading, unloading, and transportation are required. However, the general road conditions in mining areas are poor and vehicle transportation is limited. Therefore, the use of pipeline transportation can reduce many difficulties, with high cost performance and low energy consumption. [0003] The ore slurry is transported by pipeline. The traditional process is to process the minerals and grind them with a rod mill together with water and dispersant to produce a certain concentration o...

Claims

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Application Information

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IPC IPC(8): B02C17/10B02C17/18
CPCB02C17/10B02C17/18
Inventor 蒋峰闫家兴
Owner 江苏恒丰能环科技股份有限公司
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