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Magnesite block containing wear-resistant polymer particles for grinding construction materials and its production

A technology of wear-resistant particles and polymers, which is applied in the field of magnesite grinding blocks containing polymer wear-resistant particles and its manufacturing, to reduce the number of times to replace grinding blocks, reduce pollution, and improve utilization.

Inactive Publication Date: 2006-08-16
罗广棉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is: (1) improve the utilization ratio of silicon carbide abrasive in the magnesite grinding block, thereby improve its durability; The grinding block of magnesia should be greatly reduced, thereby greatly reducing industrial pollution and benefiting environmental protection

Method used

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  • Magnesite block containing wear-resistant polymer particles for grinding construction materials and its production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 1. Preparation of polymer wear-resistant particles:

[0054] (1) Chemical composition of polymer wear-resistant particles (weight percent):

[0055] Abrasive: Silicon carbide 5%;

[0056] Binder: Polypropylene plastic 95%;

[0057] (2) Process steps for preparing polymer wear-resistant particles:

[0058]① Mix the abrasive and the binder according to the above ratio, and mix well with a mixer;

[0059] ② Slowly add the above-mentioned mixed ingredients into the barrel of the extruder, preheat and melt the barrel, and after the screw is plasticized, extrude it into a strip-shaped plastic mixture through the outlet. The temperature of the barrel is 160°C- Between 180°C, the screw speed is 25-60 rpm, and the diameter of the discharge port is selected between φ6-15mm according to needs;

[0060] ③ After the extruded strip-shaped plastic mixture is cooled, use a crusher to crush the plastic strips into plastic particles with a particle size of 6-10mm, which are the above...

Embodiment 2

[0065] 1. Preparation of polymer wear-resistant particles:

[0066] (1) Chemical composition of polymer wear-resistant particles (weight percent):

[0067] Abrasives: silicon carbide 21%; brown corundum 1%;

[0068] Binder: polypropylene plastic 46%;

[0069] Filling material 20%, its chemical composition is (weight percentage of filling material): fluorite 69%, barite powder 22%, quartz powder 3%, talcum powder 6%;

[0070] Additives: Sodium Gluconate 1.5%; Water 1.5%;

[0071] Sclerosing Agent: Hexatropine 9%.

[0072] .(2) Process steps for manufacturing polymer wear-resistant particles:

[0073] First, mix the filler, hardener and additives according to the above ratio and use a ball mill to grind to a fineness of 600 mesh (if the particle size of the raw material is finer than 600 mesh, it can be sieved and used without ball milling);

[0074] The following steps are the same as in Example 1, except that the screw speed should be adjusted to 25-45 rpm, the diameter o...

Embodiment 3

[0077] 1. Preparation of polymer wear-resistant particles:

[0078] (1) Chemical composition of polymer wear-resistant particles (weight percent):

[0079] Abrasive: Silicon Carbide 43%;

[0080] Binder: 196 unsaturated polyester resin 30%;

[0081] Filling material: 26.55%, its chemical composition is (weight percentage of filling material): magnesium oxide 50%, calcium carbonate 25%, quartz powder 22%, sodium chloride 3%;

[0082] Additive: Cobalt octoate 0.15%;

[0083] Hardener: Methyl Ethyl Ketone Peroxide 0.3%.

[0084] (2) Process steps for manufacturing the above-mentioned polymer wear-resistant particles:

[0085] ① Mix the 100-mesh filler and abrasive evenly according to the above ratio;

[0086] ② Weigh the 196 unsaturated polyester resin liquid, additives and hardener according to the above ratio, add the additives into the 196 unsaturated polyester resin liquid and stir evenly, then add the hardener and stir evenly;

[0087] ③ Add the filler and abrasive in ...

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Abstract

Magnesite abrasive bricks containing wear resistant particles of high polymer used for grinding of building materials and their producing process are disclosed. The magnesite abrasive bricks containing wear resistant particle of high polymer solve the problems of increasing the utilization ratio of silicon carbide abraser, decreasing the waste material of grinding obviously. They are produced by: preparing wear resistant particle of high polymer, adding in 3-65% (wt%) of it to the slurry of the base of the magnesite abrasive brick and stirring, pouring the homogeneous slurry into plastic die and solidifying.

Description

technical field [0001] The invention relates to the technical field of building material grinding tools, in particular to a magnesite grinding block containing polymer wear-resistant particles for grinding building materials and a manufacturing method thereof. Background technique [0002] Existing magnesia grinding blocks used for grinding and polishing of ceramic floor tiles, stone materials and glass-ceramics use 42-57% by weight of magnesium oxide, 30-35% of magnesium chloride solution as binder, and 8-28% of Silicon carbide sand is used as abrasive, mixed into a slurry, poured into shape, naturally reacted and solidified, and stored for more than 15 days before use. There are following deficiencies in this grinding block: [0003] (1) The most expensive abrasive silicon carbide sand has a low utilization rate. This is because the adhesive force of the binder to the silicon carbide sand with small particles and a relatively smooth surface is not strong, and the molding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/14
Inventor 罗广棉
Owner 罗广棉