A New Technology of Sand Removal in Two Stages and Four Stages

Abstract

The invention relates to the field of cotton linter processing technology, and is a new two-stage four-stage desanding technology provided for the existing cotton linter processing technology with more hard impurities and more loss of raw materials. It is characterized in that the tailings produced by the first-stage desander and the second-stage desander are collected in a centralized manner, and after being diluted, they enter the multi-stage tailings desander for treatment, and the tailings generated by the multi-stage tailings desander are discharged into the microfilter; The filter collects the fiber-containing fourth-stage tailings that come with the water, and manually sorts out the obvious foreign matter that cannot be reused. After weighing and measuring, it is pumped into the steaming ball, and is cooked together with the raw materials for reprocessing. This process uses physical methods to remove hard impurities between raw material fibers, reduces the amount of cooking chemicals in the front ball, reduces process conditions, and ensures that the internal quality of raw materials is not affected; the tailings of the desander are reprocessed at multiple levels to reduce Fiber loss increases the yield of raw materials; improves the physical impurity removal effect of the sand removal process, reduces dust such as yellow skin on the surface of the cotton pulp board, and improves product quality.

Description

technical field [0001] The invention belongs to the field of cotton linter processing technology, in particular to a new two-stage four-stage sand removal process for cotton linters. Background technique [0002] like figure 1 Shown is the traditional cotton linters processing process, which has the following drawbacks: [0003] 1. After the raw cotton linters are cooked, there are still hard impurities such as cotton seed hulls and cotton stalks that cannot be boiled; [0004] 2. The original desanding process is simple, and the tailings are not treated, but directly discharged, resulting in a large loss of raw materials; [0005] 3. The desanding process is simple and cannot achieve good physical impurity removal effect. We can only increase the amount of chemicals used in the previous cooking process and improve the process conditions, resulting in a decrease in the internal quality and strength of raw materials. Contents of the invention [0006] The purpose of the ...

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Problems solved by technology

[0003] 1. After the raw cotton linters are cooked, there are still hard impurities such as cotton seed hulls and cotton stalks that cannot be boiled;

[0004] 2. The original desanding process is simple, and the tailings are not treated, but directly discharged, resulting in a large loss of raw materials;

[0005] 3. The desanding process is simple and cannot achieve a good physical impurity removal effect. We can only increase the amount of chemicals used in the previous cooking process and improve the process conditions, resulting in a decline in the intrinsic quality and strength of raw materials.

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