Slurry grain composition selection method for pipeline conveying

A technology for pipeline transportation and slurry, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of system cost increase, friction loss, high viscosity, etc., and achieve good stability, wide application range, and moderate viscosity Effect

Active Publication Date: 2019-12-20
WUHAN DESIGN & RES INST OF CHINA COALTECH & ENG GROUP
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is to solve the problem of fine particles, high viscosity, friction loss and grinding power consumption caused by the existing slurry particle grading selection meth

Method used

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Embodiment Construction

[0021] The invention is a method for selecting the gradation of coal gangue slurry for pipeline transportation, comprising the following steps:

[0022] (1) According to the initial grading table, pulp raw materials with different particle gradations are obtained by grinding, sieving, and weighing preparation methods;

[0023] (2) Mixing the pulp raw material with water to obtain a slurry with the same mass concentration of the pulp raw materials at all levels, the mixing ratio of the pulp raw material and water is carried out according to the mass concentration, and the value range of the mass concentration is 30%-50%.

[0024] (3) Put different grades of slurry into different containers of the same specification (the preferred size is ≥1000ml measuring cylinder, when it is less than 1000ml, the diameter of the measuring cylinder is too small, there will be side wall effect, which will affect the settlement of particles, and the measured data will be relatively small. Large d...

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Abstract

The invention discloses a slurry grain composition selection method for pipeline conveying. The method comprises the steps that (1) according to an initial composition table, slurry raw materials withdifferent grain compositions are obtained through the preparation modes of grinding, sieving and weighing; (2) the slurry raw materials are mixed with water to obtain prepared slurry which contains all grades of slurry raw materials with the same mass concentration; (3) the slurry with different grades is placed in different containers with the same specifications for sedimentation analysis; (4)a probe provided with a weight disk is inserted into the slurry completing sedimentation analysis in the step (3) for hard bottom analysis; (5) viscosity analysis is performed on the slurry with different grades according to the capillary viscosity test principle; and (6) the slurry composition most suitable for pipeline conveying is selected according to analysis results obtained in the steps (3), (4) and (5) and grain thickness. Through the method, the optimal composition slurry suitable for pipeline conveying can be screened out; the problems that through an existing method, the composition average particle size is small, and the viscosity, frictional resistance loss and energy consumption are increased are solved; and the method also has the advantage of being wide in application range.

Description

technical field [0001] The invention belongs to the field of slurry pipeline transportation, and in particular relates to a selection method for slurry particle gradation used in pipeline transportation. Background technique [0002] Pipeline slurry transportation is a process in which minerals are crushed and ground into a qualified slurry with a certain particle size distribution and concentration, and transported through pipelines with water as the carrier. Slurry pipeline transportation technology is an energy-saving and environmentally friendly technology. Compared with traditional material transportation methods, it has many advantages such as less land occupation, strong adaptability, and no pollution. [0003] In order to ensure the safe and economical operation of the slurry pipeline, on the one hand, the transported slurry is required to have good stability to prevent the particles from settling and blocking the pipeline, and at the same time, the viscosity coeffic...

Claims

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Application Information

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IPC IPC(8): G01N15/04G01N11/02G01N5/00
CPCG01N5/00G01N11/02G01N15/04
Inventor 路云田达理王铁力黄孟徐杨青辛德林冯斌陈益滨于新胜郭欢赵利安甘正旺逯桂平高欢
Owner WUHAN DESIGN & RES INST OF CHINA COALTECH & ENG GROUP
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