CN104858021A - Quartz sand surface treatment method - Google Patents
Quartz sand surface treatment method Download PDFInfo
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- CN104858021A CN104858021A CN201510307525.4A CN201510307525A CN104858021A CN 104858021 A CN104858021 A CN 104858021A CN 201510307525 A CN201510307525 A CN 201510307525A CN 104858021 A CN104858021 A CN 104858021A
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- quartz sand
- sand powder
- ball mill
- treatment method
- surface treatment
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 239000006004 Quartz sand Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000004381 surface treatment Methods 0.000 title claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 73
- 230000004048 modification Effects 0.000 claims abstract description 15
- 238000012986 modification Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 27
- 229910000077 silane Inorganic materials 0.000 claims description 27
- 238000000227 grinding Methods 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 20
- 235000021050 feed intake Nutrition 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000007822 coupling agent Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000003801 milling Methods 0.000 abstract 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 239000011780 sodium chloride Substances 0.000 abstract 2
- 238000010924 continuous production Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 230000035611 feeding Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 239000010453 quartz Substances 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010423 industrial mineral Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/06—Selection or use of additives to aid disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
- B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to crushing or disintegrating zone
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Silicon Compounds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical filed of quartz sand modification and in particular relates to a quartz sand surface treatment method. The method comprises the steps of feeding while milling, performing surface modification treatment, curing and performing air flow grading, and more specifically, the steps are as follows: feeding quartz sand of different grain sizes into a ball mill for milling; and performing modification treatment while milling; heating with the thermal energy generated during the collision and friction of materials in the cavity of the ball mill, wherein the reaction temperature is controlled to 70-80 DEG C, so that the surface of a quartz sand powder body is wrapped with a saline coupling agent and coupling reaction is performed; performing air flow grading on the quartz sand powder body through a grading machine, wherein the temperature of the quartz sand powder body gradually decreases to 22-28 C degree during air flow grading, so that the saline coupling agent is cured on the surface of the quartz sand powder body and the modified quartz sand powder body of the desired grain size are acquired after air flow grading. Compared with the prior art, the quartz sand surface treatment method has the advantages that the technique is simple, the yield is high, the continuous production is realized, the cost is lowered and the technique is safe and environmentally friendly.
Description
Technical field
The present invention relates to the modified technique technical field of quartz sand, be specifically related to the surface treatment method of quartz sand.
Background technology
Quartz sand is the quartz particles that quartz processes through fragmentation, its main component is SiO2, it is a kind of silicate mineral of hard, wear-resisting, stable chemical performance, thus, quartz sand, as important industrial mineral raw material, is widely used in numerous industrial circles such as building, glass, casting, pottery and refractory material, metallurgy, chemical industry.
Because quartz sand has hard, wear-resisting, that chemical stability is good advantage, and its raw material very easily obtains, cost is low, and in artificial quartz stone plate industry, quartz sand occupies an important position.At present, artificial quartz in lump is made up of additives such as quartz sand, unsaturated-resin, auxiliary agents, but because quartz sand is different from the interfacial property of organic polymer resin material, poor compatibility, thus have and be difficult to dispersed wherein, some physicochemical properties of its goods also can be made to descend degradation shortcoming to some extent.Therefore, in order to improve the addition of quartz sand, reach its due functional effect, just must carry out modification to quartz sand surface, to improve the physicochemical characteristics on its surface, strengthen the compatibility between itself and resin, improve product and producing the dispersiveness in blending process, strengthen the combination properties such as the associativity of itself and organic polymer resin, functional and mechanical strength.
In prior art, the process of surface treatment of quartz sand first carries out grinding the quartz sand powder forming different-grain diameter size to quartz sand, then classification is carried out to the quartz sand powder of different-grain diameter size, and filter out the quartz sand powder of required grain size specification, and then add silane coupler as surface modifier, prepare Modified Quartz Sand.But, above-mentioned quartz sand treatment process has following defect: 1) whole preparation technology needs successively through grinding, Sieving and casing, multiple step such as coupling agent modified, and the quartz sand not meeting Particle size requirements after grinding needs again to grind again, thus whole complex process, cannot continous way batch production, cause the production cycle longer, yield poorly, production cost is high; 2) need in modifying process with an organic solvent to dissolve dispersion silane coupler, and in coupling reaction process, need the high temperature being heated to 100 ~ 150 DEG C, thus cause the danger of following process, and with an organic solvent not environmentally; 3) in surface treatment process, because mobility is poor, easily generation quartz sand powder reuniting forms powder ball and causes the change of diameter of particle, not only have impact on the accuracy of diameter of particle but also has a strong impact on the performance of product.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide that a kind of technique is simple, output is high, realize consecutive production and can reduce costs, the surface treatment method of the quartz sand of safety and environmental protection.
To achieve these goals, the present invention adopts following technical scheme:
The surface treatment method of quartz sand is provided, it is characterized in that: comprise following treatment step:
(1) feed intake:
The quartz sand of different-grain diameter size is dropped in ball mill with certain rate of feeding;
(2) simultaneous grinding and surface modification treatment:
Silane coupler directly sprays in dog-house place in ball mill cavity, the temperature controlled in ball mill cavity is 70 ~ 80 DEG C, the consumption of described silane coupler is 0.3%-~ 0.45% of described quartz sand weight, and material carries out the quartz sand powder grinding and obtain after coupling reaction different-grain diameter size in ball mill simultaneously;
(3) solidify:
Grader is delivered under the negative pressure state that described quartz sand powder step (2) obtained produces at air-introduced machine, in air current classifying process, the temperature of quartz sand powder is dropped to 22 ~ 28 DEG C gradually, make silane coupler be solidificated in the surface of quartz sand powder, obtain the Modified Quartz Sand powder of different-grain diameter size;
(4) air current classifying:
The Modified Quartz Sand powder of the different-grain diameter size obtained after step (3) solidification is carried out air current classifying under the constant negative pressure state of grader, and the rotating speed controlling grader is 100 ~ 1000r/min;
(5) collect:
The Modified Quartz Sand powder of the required particle size obtained after step (4) classification is entered collector to collect, for subsequent use;
(6) reprocess:
The Modified Quartz Sand powder of the undesirable greater particle size obtained after step (4) classification is back to feed inlet of globe mill, and repeating said steps (1) is to (5).
Preferably, in described step (1), rate of feeding is 3 ~ 8 t/h.
Preferably, in described step (2), the temperature controlled in ball mill cavity is 73 ~ 78 DEG C, and the consumption of described silane coupler is 0.35%-~ 0.45% of described quartz sand weight.
Preferably, in described step (2), the temperature controlled in ball mill cavity is 75 DEG C, and the consumption of described silane coupler is 0.38% of described quartz sand weight.
Preferably, in described step (3), the temperature controlling quartz sand powder drops to 24 ~ 26 DEG C gradually.
Preferably, in described step (4), the rotating speed controlling grader is 300 ~ 800r/min r/min.
the invention has the beneficial effects as follows:
The surface treatment method of quartz sand of the present invention, the quartz sand of different-grain diameter is once dropped into grinding in ball grinder, and sprinkling silane coupler carries out surface modification treatment while grinding, the heat utilizing the material collision friction in ball mill cavity to produce heats, and control reaction temperature at 70 ~ 80 DEG C, make silane coupler be coated on quartz sand powder surface and carry out coupling reaction, then quartz sand powder carries out air current classifying through grader, in air current classifying process, make quartz sand powder be cooled to 22 ~ 28 DEG C gradually, with the surface making silane coupler be solidificated in quartz sand powder, the Modified Quartz Sand powder of required particle diameter can be obtained after air current classifying.Compared with prior art, have the following advantages:
(1) quartz sand of the present invention carries out surface modification treatment in grinding simultaneously, make the efficiency of quartz sand surface process synchronous with grinding efficiency, and follow-up once completing in grader is solidified and sizing screening, thus enormously simplify whole operation, shorten the production cycle, significantly improve output, the output of Modified Quartz Sand powder can reach about 10 tons/hour, can meet the demand produced in enormous quantities better;
(2) the present invention carries out surface modification treatment while grinding, and Optimizing Process Parameters (by controlling the steps such as rate of feeding), because quartz sand powder constantly rotates in ball mill and vibrates, significantly improve the mobility in the processing procedure of quartz sand powder surface, this had both contributed to improving grinding efficiency, effectively can avoid again quartz sand powder that the phenomenon of reuniting occurs, ensure that the quality of Modified Quartz Sand powder;
(3) the present invention first carries out grinding and surface modification treatment, then controls its rational rotating speed by grader, is cured the sizing screening with particle diameter, can guarantee the accuracy of the Modified Quartz Sand diameter of particle screened;
(4) the present invention is in surface treatment process, do not need to be suitable for any organic solvent, and the heat produced by self collision friction of material in ball mill in reaction heats, and control reaction temperature at 70 ~ 80 DEG C, then in the air current classifying process of grader, quartz sand powder is made to be cooled to 22 ~ 28 DEG C gradually, thus, without the need to heating in whole technique, it is safety and environmental protection more, and energy consumption is low;
(5) method of the present invention, grinding and surface modification treatment is once completed in ball mill, after grader sizing screening, ball mill reprocessing is back to again for the Modified Quartz Sand powder not meeting Particle size requirements, thus achieve continous way production, substantially increase production efficiency, production cost is declined to a great extent.
Detailed description of the invention
The invention will be further described with the following Examples.
embodiment 1.
The surface treatment method of quartz sand of the present invention, comprises following treatment step:
(1) feed intake:
The quartz sand of different-grain diameter size is dropped in ball mill with the rate of feeding of 3 t/h;
(2) simultaneous grinding and surface modification treatment:
Silane coupler directly sprays in dog-house place in ball mill cavity, the temperature controlled in ball mill cavity is 75 DEG C, the consumption of described silane coupler is 0.38% of described quartz sand weight, and material carries out the quartz sand powder grinding and obtain after coupling reaction different-grain diameter size in ball mill simultaneously;
(3) solidify:
Grader is delivered under the negative pressure state that described quartz sand powder step (2) obtained produces at air-introduced machine, in air current classifying process, the temperature of quartz sand powder is dropped to 25 DEG C gradually, make silane coupler be solidificated in the surface of quartz sand powder, obtain the Modified Quartz Sand powder of different-grain diameter size;
(4) air current classifying:
The Modified Quartz Sand powder of the different-grain diameter size obtained after step (3) solidification is carried out air current classifying under the constant negative pressure state of grader, and the rotating speed controlling grader is 350r/min;
(5) collect:
The Modified Quartz Sand powder of the required particle size obtained after step (4) classification is entered collector to collect, for subsequent use;
(6) reprocess:
The Modified Quartz Sand powder of the undesirable greater particle size obtained after step (4) classification is back to feed inlet of globe mill, and repeating said steps (1) is to (5).
embodiment 2.
The surface treatment method of quartz sand of the present invention, comprises following treatment step:
1) feed intake:
The quartz sand of different-grain diameter size is dropped in ball mill with the rate of feeding of 4.5 t/h;
(2) simultaneous grinding and surface modification treatment:
Silane coupler directly sprays in dog-house place in ball mill cavity, the temperature controlled in ball mill cavity is 73 DEG C, the consumption of described silane coupler is 0.42% of described quartz sand weight, and material carries out the quartz sand powder grinding and obtain after coupling reaction different-grain diameter size in ball mill simultaneously;
(3) solidify:
Grader is delivered under the negative pressure state that described quartz sand powder step (2) obtained produces at air-introduced machine, in air current classifying process, the temperature of quartz sand powder is dropped to 28 DEG C gradually, make silane coupler be solidificated in the surface of quartz sand powder, obtain the Modified Quartz Sand powder of different-grain diameter size;
(4) air current classifying:
The Modified Quartz Sand powder of the different-grain diameter size obtained after step (3) solidification is carried out air current classifying under the constant negative pressure state of grader, and the rotating speed controlling grader is 500r/min;
(5) collect:
The Modified Quartz Sand powder of the required particle size obtained after step (4) classification is entered collector to collect, for subsequent use;
(6) reprocess:
The Modified Quartz Sand powder of the undesirable greater particle size obtained after step (4) classification is back to feed inlet of globe mill, repeats above-mentioned steps (1) to (5).
embodiment 3.
The surface treatment method of quartz sand of the present invention, comprises following treatment step:
(1) feed intake:
The quartz sand of different-grain diameter size is dropped in ball mill with 6 t/h rate of feedings;
(2) simultaneous grinding and surface modification treatment:
Silane coupler directly sprays in dog-house place in ball mill cavity, the temperature controlled in ball mill cavity is 78 DEG C, the consumption of described silane coupler is 0.45% of described quartz sand weight, and material carries out the quartz sand powder grinding and obtain after coupling reaction different-grain diameter size in ball mill simultaneously;
(3) solidify:
Grader is delivered under the negative pressure state that described quartz sand powder step (2) obtained produces at air-introduced machine, in air current classifying process, the temperature of quartz sand powder is dropped to 23 DEG C gradually, make silane coupler be solidificated in the surface of quartz sand powder, obtain the Modified Quartz Sand powder of different-grain diameter size;
(4) air current classifying:
The Modified Quartz Sand powder of the different-grain diameter size obtained after step (3) solidification is carried out air current classifying under the constant negative pressure state of grader, and the rotating speed controlling grader is 600r/min;
(5) collect:
The Modified Quartz Sand powder of the required particle size obtained after step (4) classification is entered collector to collect, for subsequent use;
(6) reprocess:
The Modified Quartz Sand powder of the undesirable greater particle size obtained after step (4) classification is back to feed inlet of globe mill, repeats above-mentioned steps (1) to (5).
embodiment 4.
The surface treatment method of quartz sand of the present invention, comprises following treatment step:
(1) feed intake:
The quartz sand of different-grain diameter size is dropped in ball mill with 6.5 t/h rate of feedings;
(2) simultaneous grinding and surface modification treatment:
Silane coupler directly sprays in dog-house place in ball mill cavity, the temperature controlled in ball mill cavity is 75 DEG C, the consumption of described silane coupler is 0.4% of described quartz sand weight, and material carries out the quartz sand powder grinding and obtain after coupling reaction different-grain diameter size in ball mill simultaneously;
(3) solidify:
Grader is delivered under the negative pressure state that described quartz sand powder step (2) obtained produces at air-introduced machine, in air current classifying process, the temperature of quartz sand powder is dropped to 26 DEG C gradually, make silane coupler be solidificated in the surface of quartz sand powder, obtain the Modified Quartz Sand powder of different-grain diameter size;
(4) air current classifying:
The Modified Quartz Sand powder of the different-grain diameter size obtained after step (3) solidification is carried out air current classifying under the constant negative pressure state of grader, and the rotating speed controlling grader is 750r/min;
(5) collect:
The Modified Quartz Sand powder of the required particle size obtained after step (4) classification is entered collector to collect, for subsequent use;
(6) reprocess:
The Modified Quartz Sand powder of the undesirable greater particle size obtained after step (4) classification is back to feed inlet of globe mill, repeats above-mentioned steps (1) to (5).
Ball mill in the surface treatment method of the quartz sand of above-described embodiment 1 to embodiment 4, air-introduced machine and grader are prior art, see the patent No. be 200910192820.4, patent name is the patent of invention of " a kind of automatic control equipment preparing quartz ultrafine powder ".
Claims (6)
1. the surface treatment method of quartz sand, is characterized in that: comprise following treatment step:
(1) feed intake:
The quartz sand of different-grain diameter size is dropped in ball mill with the rate of feeding of 2 ~ 10 t/h;
(2) simultaneous grinding and surface modification treatment:
Silane coupler directly sprays in dog-house place in ball mill cavity, the temperature controlled in ball mill cavity is 70 ~ 80 DEG C, the consumption of described silane coupler is 0.3%-~ 0.45% of described quartz sand weight, and material carries out the quartz sand powder grinding and obtain after coupling reaction different-grain diameter size in ball mill simultaneously;
(3) solidify:
Grader is delivered under the negative pressure state that described quartz sand powder step (2) obtained produces at air-introduced machine, in air current classifying process, the temperature of quartz sand powder is dropped to 22 ~ 28 DEG C gradually, make silane coupler be solidificated in the surface of quartz sand powder, obtain the Modified Quartz Sand powder of different-grain diameter size;
(4) air current classifying:
The Modified Quartz Sand powder of the different-grain diameter size obtained after step (3) solidification is carried out air current classifying under the constant negative pressure state of grader, and the rotating speed controlling grader is 100 ~ 1000 r/min;
(5) collect:
The Modified Quartz Sand powder of the required particle size obtained after step (4) classification is entered collector to collect, for subsequent use;
(6) reprocess:
The Modified Quartz Sand powder of the undesirable greater particle size obtained after step (4) classification is back to feed inlet of globe mill, and repeating said steps (1) is to (5).
2. according to the surface treatment method of the quartz sand described in claim 1, it is characterized in that: in described step (1), rate of feeding is 3 ~ 8 t/h.
3. according to the surface treatment method of the quartz sand described in claim 1, it is characterized in that: in described step (2), the temperature controlled in ball mill cavity is 73 ~ 78 DEG C, and the consumption of described silane coupler is 0.35%-~ 0.45% of described quartz sand weight.
4. according to the surface treatment method of the quartz sand described in claim 3, it is characterized in that: in described step (2), the temperature controlled in ball mill cavity is 75 DEG C, and the consumption of described silane coupler is 0.38% of described quartz sand weight.
5. according to the surface treatment method of the quartz sand described in claim 1, it is characterized in that: in described step (3), the temperature controlling quartz sand powder drops to 24 ~ 26 DEG C gradually.
6. according to the surface treatment method of the quartz sand described in claim 1, it is characterized in that: in described step (4), the rotating speed controlling grader is 300 ~ 800r/min.
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| CN201510307525.4A CN104858021B (en) | 2015-06-08 | 2015-06-08 | The surface treatment method of quartz sand |
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| CN201510307525.4A CN104858021B (en) | 2015-06-08 | 2015-06-08 | The surface treatment method of quartz sand |
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| CN104858021B CN104858021B (en) | 2017-09-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543773A (en) * | 2016-11-01 | 2017-03-29 | 蚌埠硅基材料产业技术研究院有限公司 | The scale surface treatment method of the superfine quartz powder of median≤2 μm |
| CN108751211A (en) * | 2018-07-07 | 2018-11-06 | 河源市极致知管信息科技有限公司 | A kind of preparation method of Modified Quartz Sand |
| CN109762222A (en) * | 2019-01-09 | 2019-05-17 | 匠欣环保家居用品科技(浙江)有限公司 | Surface has the ground cushion and its processing method of scratch resistant quartz sand layer |
| CN110408237A (en) * | 2019-08-07 | 2019-11-05 | 江苏联瑞新材料股份有限公司 | A kind of woodcare paint clear finish silicon powder and preparation method thereof |
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| CN201930825U (en) * | 2010-08-23 | 2011-08-17 | 清华大学 | Ball-milling and modifying integration device used for superfine carbon black composite filler |
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| CN202438372U (en) * | 2012-02-27 | 2012-09-19 | 山东惟远新材料装备有限公司 | Quartz smashing graded production line |
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| CN108751211A (en) * | 2018-07-07 | 2018-11-06 | 河源市极致知管信息科技有限公司 | A kind of preparation method of Modified Quartz Sand |
| CN109762222A (en) * | 2019-01-09 | 2019-05-17 | 匠欣环保家居用品科技(浙江)有限公司 | Surface has the ground cushion and its processing method of scratch resistant quartz sand layer |
| CN110408237A (en) * | 2019-08-07 | 2019-11-05 | 江苏联瑞新材料股份有限公司 | A kind of woodcare paint clear finish silicon powder and preparation method thereof |
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