Boron nitride/silica powder compounded ceramic nozzle and production method thereof

Abstract

The invention discloses a boron nitride/silica powder compounded ceramic nozzle. The boron nitride/silica powder compounded ceramic nozzle is characterized by being prepared from the following raw materials in parts by weight: 70-80 parts of boron nitride, 3-6 parts of potassium feldspar, 4.1-5.6 parts of calcite, 7-12 parts of radium stone, 6-9 parts of blast furnace slag, 20-35 parts of ultrafine high-purity alumina powder, 1-2 parts of silica powder, 1.2-2.6 parts of polyacrylonitrile fibres, 0.6-0.9 part of sodium lauryl sulphate, 0.2-0.4 part of manganese sulphate, 0.5-1.1 parts of calcium carbonate, 6-9 parts of methyl methacrylate, 4-7 parts of dibutyl phthalate, 3-4 parts of ethyl alcohol, 2-4 parts of auxiliaries and an appropriate amount of water. According to the boron nitride/silica powder compounded ceramic nozzle disclosed by the invention, boron nitride and silica powder and compositely added to raw materials, meanwhile, blast furnace slag, radium stone and the like are further added, thus wastes are effectively utilized, cost is saved, and the performance indexes of the product are improved; the ceramic nozzle prepared by the method disclosed by the invention is good in chemical resistance, good in wear resistance, anti-corrosion at a high temperature, and capable of completely meeting the performance requirements of ceramic nozzles.

Description

technical field [0001] The invention relates to a preparation process of a ceramic nozzle suitable for a color sorter, belongs to the technical field of nozzle forming, and in particular relates to a boron nitride / silicon micropowder composite ceramic nozzle and a manufacturing method thereof. Background technique [0002] Color sorter is a kind of non-destructive sorting equipment used for quality inspection and grading of bulk materials. It is widely used in grain, food, pigment chemical industry and other industries. The color sorter uses photoelectric detection technology to quickly and effectively distinguish and remove the heterochromatic particles in the granular material according to the difference in the optical characteristics of the material, so as to sort materials of different quality grades. The removal action is done by the ceramic nozzle, which is an indispensable key component in the color sorter system, and its performance directly affects the effect of col...

AI Technical Summary

Problems solved by technology

[0003] Since ceramic nozzles were introduced into China in the 1990s, the materials have been continuously improved and updated, gradually developing from oxide ceramics to nitride ceramics and carbide ceramics, but the production technology and preparation methods are backward, resulting in the existence of ceramic nozzles in the prior art. Many defects, such as low hardness, poor wear resistance, weak anti-corrosion and anti-erosion ability, low ductility, etc.