Method and whole set of impurity removing equipment for removing impurities in lake and river silt

Abstract

The invention discloses a method and a whole set of impurity removing equipment for removing impurities in lake and river silt. Diluted silt is delivered into a multi-layer primary impurity removal drum screen through a slurry pump for separation and removal of coarse impurities, to-be-crushed silt blocks and silt slurry are obtained, the silt blocks are crushed by a slurry crusher, and the crushed silt material and silt slurry are subjected to secondary screening by a secondary impurity removal drum screen for removal of fine impurities in the slurry. With the adoption of the equipment and the method, hard impurities such as shells, bricks, stones and the like in the silt can be removed, soft impurities such as plastic ropes and the like can also be removed, various impurities in the silt can be relatively thoroughly removed, the slurry in the silt can be separated, soil blocks in the silt can be crushed and made into slurry, the quality of finished product slurry is improved, the yield of the finished product slurry is increased, original silt is treated and directly used as a raw material for brick firing, dehydration drying is not required, the silt utilization cost is reduced, and the silt is truly turned into wealth.

Description

Technical field: [0001] The invention relates to a technology for utilizing sludge in lakes, rivers and other waters, in particular to a method for removing hard debris such as snails, shells, stones, bricks and tiles, wooden parts, metal objects, waste glass, and reed roots in the sludge. , plastic ropes, plastic nets, plastic bags and waste plastic paper and other methods of tough impurities that can be entangled and their impurity removal equipment. Background technique: [0002] It is the original intention of the present invention to make lake and river silt truly become a resource to be effectively utilized and realize waste utilization. As we all know, there are snails, shells, stones, bricks, wooden parts, metal objects, waste glass and other hard debris in the silt of lakes and rivers, as well as reed roots, plastic ropes, waste fishing nets, plastic bags and plastic woven bags, etc. Toughness impurities, the existence of these impurities seriously affects the effe...

AI Technical Summary

Problems solved by technology

Because there are a lot of hard lumps such as snails, shells, stones, bricks and tiles, wooden poles in the lake and river silt, as well as soft objects such as ropes and waste plastic paper, etc., if these impurities are not removed, it will not only damage the soil crusher. , mud mill, brick extrusion molding machine and other brick-making equipment, and after the bricks containing the above impurities are fired at high temperature, there will be insurmountable quality defects on the bricks, such as the firing of mud containing snails, shells, and stones Bricks will have convex bubble defects after being soaked in water, because the main component of snails, shells, and stones is calcium carbonate, which will form calcium oxide after high-temperature firing, and calcium oxide will expand when it meets water. The flatness of the brick wall is difficult to guarantee

[0007] The brick body is fired from mud containing plastic ropes, plastic nets, plastic bags, waste plastic paper, etc. that will entangle soft objects. After the brick body is fired at high temperature, holes will be formed in the brick body, which will damage the force of the brick body. The structure directly affects the bearing strength of the bricks, and the walls made of it have potential safety hazards

[0008] Therefore, in order to successfully use silt to make bricks and ensure that the bricks made can overcome the deficiencies in the prior art, the silt must be cleaned of impurities. The applicant has searched and found that there is no such method suitable for industrialized silt removal in China. method, and there is no dedicated sludge removal equipment

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