CN104446484A - Zirconia ceramic nozzle for color sorters and manufacturing method thereof - Google Patents

Abstract

The invention discloses a zirconia ceramic nozzle for color sorters. The zirconia ceramic nozzle for the color sorters is characterized by being prepared from the following raw materials in parts by weight: 75-80 parts of silicon carbide, 6-9 parts of zirconia, 1-3 parts of steel fibers, 2-3 parts of magnesite, 6-9 parts of calcium silicate slag, 0.4-0.7 part of chalk powder, 1.1-1.6 part of cellulose ether, 4-7 parts of glycerol, 13-15 parts of organic molybdenum, 0.7-1.2 parts of aramid fiber, 25-35 parts of cerium dioxide, 0.3-0.5 part of 1-hexadecanesulfonic acid sodium salt, 0.3-0.6 part of sodium hexadecanesulfonate, 0.1-0.3 part of sodium tripolyphosphate, 3-4 parts of auxiliaries and appropriate amount of water. By adding a plurality of effective constituents, the prepared ceramic nozzle has favorable corrosion resistance and abrasion resistance, a duct is small, good in internal finish degree of the duct is good, the spray effect is ideal; a three-dimensional complicated nozzle can be manufactured; and the manufacturing method is simple and the cost is low.

Description

A kind of color selector zirconia ceramics nozzle and preparation method thereof

Technical field

The present invention relates to a kind of ceramic nozzle preparation technology being applicable to color selector, belong to nozzle field shaping technique, be specifically related to a kind of color selector zirconia ceramics nozzle and preparation method thereof.

Background technology

Color selector can't harm size separation equipment for the one of bulk material Quality Detection and classification, has a wide range of applications in industries such as grain, food, pigment chemical industry.Color selector is the difference according to material optical characteristics, utilizes detecting technique to be differentiated fast and effectively by the heterochromatic particle in granule materials and rejects thus the material of the different quality grade of sorting.And the action of rejecting is completed by ceramic nozzle, ceramic nozzle is key part indispensable in color selector system, and the quality of its performance directly has influence on the effect of look choosing.

Ceramic nozzle age when eighties of last century nine has introduced since China, material constantly improves renewal, nitride ceramics and carbide ceramics is developed into gradually from oxide ceramics, and production technique and preparation method fall behind, cause ceramic nozzle in prior art to there is many defects, such as hardness is not high, wear no resistance, protection against corrosion fluid erosion prevention ability is weak, ductility is little.For overcoming the deficiencies in the prior art, be necessary to be improved existing ceramic nozzle production technology, thus obtained be applicable to the different demands of color selector have that cost is low, the ceramic nozzle of function diversification, the function such as fire-retardant, hardness is high, wear-resisting, radioprotective.

Summary of the invention

Object of the present invention is just to provide a kind of color selector zirconia ceramics nozzle and preparation method thereof, to overcome the deficiencies in the prior art.

The object of the present invention is achieved like this:

A kind of color selector zirconia ceramics nozzle, it is characterized in that, be made up of the raw material of following weight part: silicon carbide 75-80, zirconium white 6-9, steel fiber 1-3, magnesite 2-3, calcium silicate slag 6-9, whiting 0.4-0.7, ether of cellulose 1.1-1.6, glycerol 4-7, organic-molybdenum 13-15, aramid fiber 0.7-1.2, cerium dioxide 25-35, Sodium hexametaphosphate 99 0.3-0.5, sodium cetanesulfonate 0.3-0.6, tripoly phosphate sodium STPP 0.1-0.3, auxiliary agent 3-4, suitable quantity of water.

Described auxiliary agent is made up of following raw materials in part by weight: water glass 18-23, maleic anhydride 2.3-5.4, ethylene glycol 3.2-4.7, polyethylene fibre 4-6, vein quartz 3-5, polygorskite 2-4, Concha rapanae thomasianae powder 5-7, paper pulp 6-8, holder agate quinoline 0.3-0.6, molybdenumdisulphide 1.2-2.4, ammonium sulfate 2.1-3.2, primary zinc phosphate 1.3-2.5, sodium oxalate 1-2, its preparation method is by vein quartz, polygorskite is crushed to 120-150 order, add Concha rapanae thomasianae powder, ammonium sulfate, sodium oxalate stirring and evenly mixing calcines 2-3 hour at 710-820 DEG C, shrend, and then add paper pulp, maleic anhydride, ethylene glycol stirring and evenly mixing, under 70-90 DEG C of bath temperature below speed lapping slurry particle diameter to 15 μm, be spray dried to powder, by obtained powder and water glass, molybdenumdisulphide, polyethylene fibre and the mixing of other remaining components, grind 1-2 hour and get final product.

The preparation method of described a kind of color selector zirconia ceramics nozzle, is characterized in that comprising the following steps:

(1) magnesite, calcium silicate slag mixing are put into calcining furnace and calcine 2-3 hour at 750-880 DEG C, quench with the calcium chloride solution of 1-3 ‰, add cerium dioxide when being cooled to 40-60 DEG C and be ground to 120-180 order;

(2) silicon carbide, zirconium white stirring and evenly mixing is got, add aramid fiber and calcine 1-2 hour at 470-550 DEG C, be cooled to room temperature and add whiting grinding 30-40 minute, then add organic-molybdenum, glycerol, Sodium hexametaphosphate 99 speed lapping to slurry particle diameter 20-30 μm, spraying dry;

(3) by step (1), the mixing of (2) reaction mass, the slurry that solid content is 50-60% is made in adding water making beating, then adds circulation stirring grinding 8-10 time according to this of sodium cetanesulfonate, tripoly phosphate sodium STPP and other remaining components, grinds more than 2 hours at every turn;

(4) above-mentioned slurry is injected die for molding, through repaired biscuit, drying, shove charge in 1850 DEG C ~ 2150 DEG C sintering 5-10 hour, cooling discharging.

The present invention has following beneficial effect: the present invention adds the ceramic nozzle that plurality of active ingredients obtains and has good erosion resistance and wear resistance, and the duct of nozzle is little, and duct interior finish is good, jeting effect is desirable, can prepare the nozzle of three-dimensional structure complexity, manufacture method is simple, and cost is low.

Embodiment

Described a kind of color selector zirconia ceramics nozzle, it is characterized in that, be made up of the raw material of following weight part: silicon carbide 77, zirconium white 7, steel fiber 3, magnesite 2, calcium silicate slag 6, whiting 0.6, ether of cellulose 1.5, glycerol 4, organic-molybdenum 14, aramid fiber 0.8, cerium dioxide 28, Sodium hexametaphosphate 99 0.5, sodium cetanesulfonate 0.3, tripoly phosphate sodium STPP 0.1, auxiliary agent 4, suitable quantity of water.

Described auxiliary agent is made up of following raw materials in part by weight: water glass 19, maleic anhydride 4.4, ethylene glycol 3.8, polyethylene fibre 4, vein quartz 3, polygorskite 2, Concha rapanae thomasianae powder 6, paper pulp 8, holder agate quinoline 0.3, molybdenumdisulphide 2.4, ammonium sulfate 2.1, primary zinc phosphate 2.3, sodium oxalate 1, its preparation method is by vein quartz, polygorskite is crushed to 120-150 order, add Concha rapanae thomasianae powder, ammonium sulfate, sodium oxalate stirring and evenly mixing calcines 2-3 hour at 710-820 DEG C, shrend, and then add paper pulp, maleic anhydride, ethylene glycol stirring and evenly mixing, under 70-90 DEG C of bath temperature below speed lapping slurry particle diameter to 15 μm, be spray dried to powder, by obtained powder and water glass, molybdenumdisulphide, polyethylene fibre and the mixing of other remaining components, grind 1-2 hour and get final product.

Making method comprises the following steps:

(1) magnesite, calcium silicate slag mixing are put into calcining furnace and calcine 2-3 hour at 750-880 DEG C, quench with the calcium chloride solution of 1-3 ‰, add cerium dioxide when being cooled to 40-60 DEG C and be ground to 120-180 order;

(2) silicon carbide, zirconium white stirring and evenly mixing is got, add aramid fiber and calcine 1-2 hour at 470-550 DEG C, be cooled to room temperature and add whiting grinding 30-40 minute, then add organic-molybdenum, glycerol, Sodium hexametaphosphate 99 speed lapping to slurry particle diameter 20-30 μm, spraying dry;

(3) by step (1), the mixing of (2) reaction mass, the slurry that solid content is 50-60% is made in adding water making beating, then adds circulation stirring grinding 8-10 time according to this of sodium cetanesulfonate, tripoly phosphate sodium STPP and other remaining components, grinds more than 2 hours at every turn;

(4) above-mentioned slurry is injected die for molding, through repaired biscuit, drying, shove charge in 1850 DEG C ~ 2150 DEG C sintering 5-10 hour, cooling discharging.

The ceramic nozzle using the present embodiment to produce has good erosion resistance and wear resistance, can under the hydrofluoric acid mixing solutions media environment of the nitric acid of 150g/L and 60g/L, and working life reaches more than 60 days; Its density reaches more than 97.3% after tested, and volume density is 3.31g/cm ³; The duct of nozzle is little, and duct interior finish is good, and jeting effect is desirable.

Claims (2)

1. a color selector zirconia ceramics nozzle, it is characterized in that, be made up of the raw material of following weight part: silicon carbide 75-80, zirconium white 6-9, steel fiber 1-3, magnesite 2-3, calcium silicate slag 6-9, whiting 0.4-0.7, ether of cellulose 1.1-1.6, glycerol 4-7, organic-molybdenum 13-15, aramid fiber 0.7-1.2, cerium dioxide 25-35, Sodium hexametaphosphate 99 0.3-0.5, sodium cetanesulfonate 0.3-0.6, tripoly phosphate sodium STPP 0.1-0.3, auxiliary agent 3-4, suitable quantity of water, described auxiliary agent is made up of following raw materials in part by weight: water glass 18-23, maleic anhydride 2.3-5.4, ethylene glycol 3.2-4.7, polyethylene fibre 4-6, vein quartz 3-5, polygorskite 2-4, Concha rapanae thomasianae powder 5-7, paper pulp 6-8, holder agate quinoline 0.3-0.6, molybdenumdisulphide 1.2-2.4, ammonium sulfate 2.1-3.2, primary zinc phosphate 1.3-2.5, sodium oxalate 1-2, its preparation method is by vein quartz, polygorskite is crushed to 120-150 order, add Concha rapanae thomasianae powder, ammonium sulfate, sodium oxalate stirring and evenly mixing calcines 2-3 hour at 710-820 DEG C, shrend, and then add paper pulp, maleic anhydride, ethylene glycol stirring and evenly mixing, under 70-90 DEG C of bath temperature below speed lapping slurry particle diameter to 15 μm, be spray dried to powder, by obtained powder and water glass, molybdenumdisulphide, polyethylene fibre and the mixing of other remaining components, grind 1-2 hour and get final product.

2. the making method of a kind of color selector zirconia ceramics nozzle according to claim 1, is characterized in that comprising the following steps:

(1) magnesite, calcium silicate slag mixing are put into calcining furnace and calcine 2-3 hour at 750-880 DEG C, quench with the calcium chloride solution of 1-3 ‰, add cerium dioxide when being cooled to 40-60 DEG C and be ground to 120-180 order;

(2) silicon carbide, zirconium white stirring and evenly mixing is got, add aramid fiber and calcine 1-2 hour at 470-550 DEG C, be cooled to room temperature and add whiting grinding 30-40 minute, then add organic-molybdenum, glycerol, Sodium hexametaphosphate 99 speed lapping to slurry particle diameter 20-30 μm, spraying dry;

(3) by step (1), the mixing of (2) reaction mass, the slurry that solid content is 50-60% is made in adding water making beating, then adds circulation stirring grinding 8-10 time according to this of sodium cetanesulfonate, tripoly phosphate sodium STPP and other remaining components, grinds more than 2 hours at every turn;

(4) above-mentioned slurry is injected die for molding, through repaired biscuit, drying, shove charge in 1850 DEG C ~ 2150 DEG C sintering 5-10 hour, cooling discharging.