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Method for improving fluidity and concentration of ore pulp

A fluidity and slurry technology, applied in the pipeline system, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of huge energy consumption in processing, wear and tear of minerals on pipelines and equipment, and water imbalance, etc., to achieve improvement The effect of slurry fluidity

Active Publication Date: 2020-08-28
江苏丸九碳中和科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 equipment are severely worn; second, due to the low concentration of ore pulp, a large amount of water is required for the production of ore pulp, and the water in the mining area and the factory is unbalanced, resulting in a large amount of waste of water resources; third, due to the low concentration, the energy consumption of subsequent factory processing is very high huge

Method used

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  • Method for improving fluidity and concentration of ore pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Step 1. Experiment with the existing slurry production line of a phosphate rock factory in Shanxi. The specific operation process is as follows:

[0042] 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 Ais 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.

[0043] The experimental process is as follows:

[0044] (1) Preparation of component A: Crushing and grinding the raw phosphate rock to make the average particle size d A When it reaches 15μm, its angle of repose is 26°.

[0045] (2) The average particle size d A A small amount (3wt%) of component A = 15μm is first added to the existing pulp (viscosity 1156mPa.s) and stirred evenly, and the pulp appears "thinning" phenomenon (due to the lubricating ...

Embodiment 2

[0085] Implemented with a precious metal tailings pulp production line in Guizhou, the specific operation process is as follows:

[0086] Step 1. Through laboratory research, the optimal lubricating particle size of the tailings is 7 μm, which means the average particle size d of component A required for the tailings to produce pulp A It is 7μm, the angle of repose is 18°, and the addition ratio is 10wt%.

[0087] The pulp production line processes 30 tons of raw ore per hour, using a ball mill with a diameter of 6 meters and a length of 12 meters. The concentration before transformation is 72.5%, and the viscosity is 979mpa.s. Renovate the existing production line, extract 8% of the existing product pulp, add water to dilute it to a concentration of 50%, and grind it into a sand mill. After grinding, the average particle size reaches 7um, and then pump the ground component A to the original production line. In the water pipeline, the ball mill that enters the original produc...

Embodiment 3

[0134] Other steps are the same as in Example 2, except that the angle of repose is 10°.

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Abstract

The invention provides a method for improving the fluidity and concentration of ore pulp. The method comprises the following steps that a micron-sized component A is added into the ore pulp, and / or high-frequency vibration is performed, wherein the particle size dA of the component A is 20 microns or below. According to the method for improving the fluidity and the concentration of the ore pulp, the mineral substance component A with the quite high lubricity is added into the ore pulp of existing ore pulp preparation equipment so as to improve the fluidity of the ore pulp; meanwhile, high-frequency vibration is performed on the prepared ore pulp so as to increase the stacking density and then improve the concentration.

Description

technical field [0001] The invention relates to the fields of mineral processing and pulp transportation, in particular to a method for improving the fluidity and concentration of the pulp. 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 use a ball mill or a rod mill to grind together with water and a dispersant to produce...

Claims

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Application Information

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IPC IPC(8): F17D3/12F17D3/01
CPCF17D3/01F17D3/12
Inventor 张艺李文芝
Owner 江苏丸九碳中和科技有限公司
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