CN118771387A - A method for producing potassium fluorosilicate - Google Patents
A method for producing potassium fluorosilicate Download PDFInfo
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- CN118771387A CN118771387A CN202411126345.1A CN202411126345A CN118771387A CN 118771387 A CN118771387 A CN 118771387A CN 202411126345 A CN202411126345 A CN 202411126345A CN 118771387 A CN118771387 A CN 118771387A
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- -1 potassium fluorosilicate Chemical compound 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 132
- 239000001103 potassium chloride Substances 0.000 claims abstract description 66
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 66
- 239000002253 acid Substances 0.000 claims abstract description 44
- 239000000706 filtrate Substances 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims description 35
- 239000012452 mother liquor Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 238000005119 centrifugation Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000002036 drum drying Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 238000007670 refining Methods 0.000 abstract description 2
- 238000004090 dissolution Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/08—Compounds containing halogen
- C01B33/10—Compounds containing silicon, fluorine, and other elements
- C01B33/103—Fluosilicic acid; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
本发明公开了一种氟硅酸钾生产方法。本发明中氟硅酸钾的生成过程包括如下步骤：1）对氟硅酸进行精制处理，置于氟硅酸储罐备用；2）对氯化钾进行溶解、除杂，制得氯化钾溶液；3）将精制氟硅酸和氯化钾溶液在合成槽中进行反应，制得氟硅酸钾晶浆，再经离心机离心、洗涤，即可制得氟硅酸钾。本发明中氟硅酸钾的生产方法简单，并且能够合理利用生产过程中产生的滤液、滤渣，减少了生产成本。
The present invention discloses a method for producing potassium fluorosilicate. The production process of potassium fluorosilicate in the present invention comprises the following steps: 1) refining fluorosilicic acid and placing it in a fluorosilicic acid storage tank for standby; 2) dissolving and removing impurities from potassium chloride to obtain a potassium chloride solution; 3) reacting the refined fluorosilicic acid and the potassium chloride solution in a synthesis tank to obtain potassium fluorosilicate slurry, and then centrifuging and washing in a centrifuge to obtain potassium fluorosilicate. The production method of potassium fluorosilicate in the present invention is simple, and can reasonably utilize the filtrate and filter residue generated in the production process, thereby reducing production costs.
Description
技术领域Technical Field
本发明属于氟硅酸钾制备技术领域，具体涉及一种氟硅酸钾生产方法。The invention belongs to the technical field of potassium fluorosilicate preparation, and specifically relates to a method for producing potassium fluorosilicate.
背景技术Background Art
氟硅酸钾是冶金工业中用作镁、铝冶炼的助剂，玻璃工业中用于制造钾玻璃、光学玻璃、不透明玻璃，农药工业中用于制造杀虫剂，化工工业中用于制造中间体，分析化学中用作分析试剂，也可用于陶瓷合成云母等方面。Potassium fluorosilicate is used as an auxiliary agent for magnesium and aluminum smelting in the metallurgical industry, used to manufacture potassium glass, optical glass, and opaque glass in the glass industry, used to manufacture insecticides in the pesticide industry, used to manufacture intermediates in the chemical industry, used as an analytical reagent in analytical chemistry, and can also be used in ceramic synthesis of mica, etc.
申请号为CN202211275261.5的专利公开了一种含氟液体制备氟硅酸钾的方法，该制备方法中先对硅渣进行处理，然后将处理后的硅渣与含氟液体搅拌反应，再加入钾盐，制得氟硅酸钾，该方法虽然能够制备出氟硅酸钾，但是得到的氟硅酸钾纯度不高，限制了氟硅酸钾在一些领域的应用。Patent application number CN202211275261.5 discloses a method for preparing potassium fluorosilicate from fluorine-containing liquid. In the preparation method, silicon slag is first treated, and then the treated silicon slag is stirred and reacted with the fluorine-containing liquid, and then potassium salt is added to obtain potassium fluorosilicate. Although this method can prepare potassium fluorosilicate, the purity of the obtained potassium fluorosilicate is not high, which limits the application of potassium fluorosilicate in some fields.
发明内容Summary of the invention
为了解决上述技术问题，本发明的目的在于提供一种氟硅酸钾生产方法。In order to solve the above technical problems, the object of the present invention is to provide a method for producing potassium fluorosilicate.
本发明的目的可以通过以下技术方案实现：The purpose of the present invention can be achieved through the following technical solutions:
一种氟硅酸钾生产方法，包括以下步骤，A method for producing potassium fluorosilicate comprises the following steps:
步骤S1、向氯化钾溶解槽内加入母液、水和氯化钾搅拌混合均匀，再加入浓度为6mol/L的盐酸调整溶液pH为5.3，开启搅拌器搅拌1.5h后，取氯化钾溶液分析化验，待氯化钾浓度为220-240g/L后，送入压滤机进行压滤，再将滤液送入氯化钾除杂槽进行除杂，除杂后的滤液再送入压滤机进行压滤，压滤后的滤液储存在氯化钾贮槽中备用；Step S1, adding mother liquor, water and potassium chloride into a potassium chloride dissolving tank and stirring to mix evenly, then adding hydrochloric acid with a concentration of 6 mol/L to adjust the solution pH to 5.3, turning on the stirrer to stir for 1.5 hours, taking the potassium chloride solution for analysis and testing, and after the potassium chloride concentration reaches 220-240 g/L, sending it to a filter press for filtration, and then sending the filtrate to a potassium chloride impurity removal tank for impurity removal, and the filtrate after impurity removal is sent to a filter press for filtration, and the filtrate after filtration is stored in a potassium chloride storage tank for standby use;
进一步地，回用母液、水和氯化钾的用量比为5-15m3：10-30m3：4.5-13.5t。Furthermore, the usage ratio of the recycled mother liquor, water and potassium chloride is 5-15m 3 :10-30m 3 :4.5-13.5t.
步骤S2、将氯化钾溶液和精制氟硅酸分别泵至氯化钾计量槽和氟硅酸计量槽进行计量，然后将计量后的氯化钾溶液和精制氟硅酸经管道同时送入合成槽内，并在常温常压下反应1h，待反应完成后，即得氟硅酸钾晶浆，所涉及的化学方程式有：Step S2, pumping potassium chloride solution and refined fluorosilicic acid to potassium chloride metering tank and fluorosilicic acid metering tank for metering respectively, then sending the metered potassium chloride solution and refined fluorosilicic acid to the synthesis tank through pipeline at the same time, and reacting at room temperature and pressure for 1h, after the reaction is completed, potassium fluorosilicate slurry is obtained, and the chemical equations involved are:
H2SiF6+2KCl → K2SiF6↓+2HClH 2 SiF 6 +2KCl → K 2 SiF 6 ↓+2HCl
进一步地，氯化钾溶液和精制氟硅酸的用量为3-9m3：2.5-7.5m3。Furthermore, the dosage of potassium chloride solution and refined fluorosilicic acid is 3-9m 3 : 2.5-7.5m 3 .
步骤S3、将氟硅酸钾晶浆在离心机中离心，分离出产品和母液，母液送入母液储槽回用溶解氯化钾，产品用清水洗涤、离心，然后送入单筒烘干回转窑中进行烘干，烘干后的产品通过单层振动筛进行筛分，区分出合格产品和不合格产品，不合格产品经离心、洗涤后加入氯化钾溶解槽，合格产品经自动包装机包装成型，即得氟硅酸钾。Step S3, centrifuging the potassium fluorosilicate slurry in a centrifuge to separate the product and the mother liquor, sending the mother liquor to the mother liquor storage tank for reuse to dissolve potassium chloride, washing the product with clean water, centrifuging, and then sending it to a single-drum drying rotary kiln for drying, the dried product is sieved by a single-layer vibrating screen to distinguish qualified products from unqualified products, the unqualified products are added to the potassium chloride dissolution tank after centrifugation and washing, and the qualified products are packaged and formed by an automatic packaging machine to obtain potassium fluorosilicate.
所述精制氟硅酸，由以下步骤制备：The refined fluorosilicic acid is prepared by the following steps:
将浓度为30-40%的原料氟硅酸由原料储罐抽至氟硅酸勾兑槽，再加入水勾兑成12%的浓度后，送入压滤机压滤，含硅滤渣返回勾兑槽回用，滤液送至氟硅酸储存罐备用。The raw material fluorosilicic acid with a concentration of 30-40% is pumped from the raw material storage tank to the fluorosilicic acid blending tank, and then water is added to blend it into a concentration of 12%. It is then sent to a filter press for filtration, and the silicon-containing filter residue is returned to the blending tank for reuse, and the filtrate is sent to the fluorosilicic acid storage tank for standby use.
本发明的有益效果：Beneficial effects of the present invention:
本发明为一种氟硅酸钾生产方法，首先对氟硅酸进行精制处理，置于氟硅酸储罐备用；然后将氯化钾进行溶解、除杂，制得氯化钾溶液；最后将精制氟硅酸和氯化钾溶液在合成槽中进行反应，制得氟硅酸钾晶浆，再经离心机离心、洗涤，即可制得氟硅酸钾。The invention discloses a method for producing potassium fluorosilicate. The method comprises the following steps: firstly, fluorosilicic acid is refined and placed in a fluorosilicic acid storage tank for standby use; then potassium chloride is dissolved and impurities are removed to obtain a potassium chloride solution; finally, the refined fluorosilicic acid and the potassium chloride solution are reacted in a synthesis tank to obtain potassium fluorosilicate slurry, which is then centrifuged and washed in a centrifuge to obtain potassium fluorosilicate.
本发明中氟硅酸钾的生产方法简单，并且能够合理利用生产过程中产生的滤液、滤渣，减少了生产成本。The production method of potassium fluorosilicate in the present invention is simple, and can reasonably utilize the filtrate and filter residue generated in the production process, thereby reducing the production cost.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
图1为氟硅酸钾生产工艺流程图。Figure 1 is a flow chart of the potassium fluorosilicate production process.
图2为氟硅酸精制工艺流程图。Figure 2 is a flow chart of the fluosilicic acid refining process.
具体实施方式DETAILED DESCRIPTION
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
实施例Example
一种氟硅酸钾生产方法，包括以下步骤，A method for producing potassium fluorosilicate comprises the following steps:
步骤S1、向氯化钾溶解槽内加入5m3母液、10m3水和4.5t氯化钾搅拌混合均匀，再加入浓度为6mol/L的盐酸调整溶液pH为5.3，开启搅拌器搅拌1.5h后，取氯化钾溶液分析化验，待氯化钾浓度为220g/L后，送入压滤机进行压滤，再将滤液送入氯化钾除杂槽进行除杂，除杂后的滤液再送入压滤机进行压滤，压滤后的滤液储存在氯化钾贮槽中备用；Step S1, add 5m3 mother liquor, 10m3 water and 4.5t potassium chloride into a potassium chloride dissolving tank and stir and mix evenly, then add hydrochloric acid with a concentration of 6mol/L to adjust the solution pH to 5.3, turn on the stirrer and stir for 1.5h, take the potassium chloride solution for analysis and testing, after the potassium chloride concentration reaches 220g/L, send it to a filter press for filtration, then send the filtrate to a potassium chloride impurity removal tank for impurity removal, and then send the filtrate after impurity removal to a filter press for filtration, and the filtrate after filtration is stored in a potassium chloride storage tank for standby use;
步骤S2、将氯化钾溶液和精制氟硅酸分别泵至氯化钾计量槽和氟硅酸计量槽进行计量，然后将计量后的3m3氯化钾溶液和2.5m3精制氟硅酸经管道同时送入合成槽内，并在常温常压下反应1h，待反应完成后，即得氟硅酸钾晶浆；Step S2, pumping the potassium chloride solution and the refined fluorosilicic acid to the potassium chloride metering tank and the fluorosilicic acid metering tank for metering, and then sending the measured 3m3 potassium chloride solution and 2.5m3 refined fluorosilicic acid into the synthesis tank through the pipeline at the same time, and reacting at room temperature and pressure for 1h. After the reaction is completed, potassium fluorosilicate slurry is obtained;
步骤S3、将氟硅酸钾晶浆在离心机中离心，分离出产品和母液，母液送入母液储槽回用溶解氯化钾，产品用清水洗涤、离心，然后送入单筒烘干回转窑中进行烘干，烘干后的产品通过单层振动筛进行筛分，区分出合格产品和不合格产品，不合格产品经离心、洗涤后加入氯化钾溶解槽，合格产品经自动包装机包装成型，即得氟硅酸钾。Step S3, centrifuging the potassium fluorosilicate slurry in a centrifuge to separate the product and the mother liquor, sending the mother liquor to the mother liquor storage tank for reuse to dissolve potassium chloride, washing the product with clean water, centrifuging, and then sending it to a single-drum drying rotary kiln for drying, the dried product is sieved by a single-layer vibrating screen to distinguish qualified products from unqualified products, the unqualified products are added to the potassium chloride dissolution tank after centrifugation and washing, and the qualified products are packaged and formed by an automatic packaging machine to obtain potassium fluorosilicate.
精制氟硅酸，由以下步骤制备：Refined fluorosilicic acid is prepared by the following steps:
将浓度为30%的原料氟硅酸由原料储罐抽至氟硅酸勾兑槽，再加入水勾兑成12%的浓度后，送入压滤机压滤，含硅滤渣返回勾兑槽回用，滤液送至氟硅酸储存罐备用。The raw material fluorosilicic acid with a concentration of 30% is pumped from the raw material storage tank to the fluorosilicic acid blending tank, and then water is added to blend it into a concentration of 12%. It is then sent to a filter press for filtration, and the silicon-containing filter residue is returned to the blending tank for reuse, and the filtrate is sent to the fluorosilicic acid storage tank for standby use.
实施例Example
一种氟硅酸钾生产方法，包括以下步骤，A method for producing potassium fluorosilicate comprises the following steps:
步骤S1、向氯化钾溶解槽内加入10m3母液、20m3水和9t氯化钾搅拌混合均匀，再加入浓度为6mol/L的盐酸调整溶液pH为5.3，开启搅拌器搅拌1.5h后，取氯化钾溶液分析化验，待氯化钾浓度为230g/L后，送入压滤机进行压滤，再将滤液送入氯化钾除杂槽进行除杂，除杂后的滤液再送入压滤机进行压滤，压滤后的滤液储存在氯化钾贮槽中备用；Step S1, add 10m3 of mother liquor, 20m3 of water and 9t of potassium chloride into a potassium chloride dissolving tank and stir and mix evenly, then add hydrochloric acid with a concentration of 6mol/L to adjust the solution pH to 5.3, turn on the stirrer and stir for 1.5h, take the potassium chloride solution for analysis and testing, after the potassium chloride concentration reaches 230g/L, send it to a filter press for filtration, then send the filtrate to a potassium chloride impurity removal tank for impurity removal, and then send the filtrate after impurity removal to a filter press for filtration, and the filtrate after filtration is stored in a potassium chloride storage tank for standby use;
步骤S2、将氯化钾溶液和精制氟硅酸分别泵至氯化钾计量槽和氟硅酸计量槽进行计量，然后将计量后的6m3氯化钾溶液和5m3精制氟硅酸经管道同时送入合成槽内，并在常温常压下反应1h，待反应完成后，即得氟硅酸钾晶浆；Step S2, pumping the potassium chloride solution and the refined fluorosilicic acid to the potassium chloride metering tank and the fluorosilicic acid metering tank for metering, and then sending the measured 6m3 potassium chloride solution and 5m3 refined fluorosilicic acid into the synthesis tank through the pipeline at the same time, and reacting at room temperature and pressure for 1h. After the reaction is completed, potassium fluorosilicate slurry is obtained;
步骤S3、将氟硅酸钾晶浆在离心机中离心，分离出产品和母液，母液送入母液储槽回用溶解氯化钾，产品用清水洗涤、离心，然后送入单筒烘干回转窑中进行烘干，烘干后的产品通过单层振动筛进行筛分，区分出合格产品和不合格产品，不合格产品经离心、洗涤后加入氯化钾溶解槽，合格产品经自动包装机包装成型，即得氟硅酸钾。Step S3, centrifuging the potassium fluorosilicate slurry in a centrifuge to separate the product and the mother liquor, sending the mother liquor to the mother liquor storage tank for reuse to dissolve potassium chloride, washing the product with clean water, centrifuging, and then sending it to a single-drum drying rotary kiln for drying, the dried product is sieved by a single-layer vibrating screen to distinguish qualified products from unqualified products, the unqualified products are added to the potassium chloride dissolution tank after centrifugation and washing, and the qualified products are packaged and formed by an automatic packaging machine to obtain potassium fluorosilicate.
精制氟硅酸，由以下步骤制备：Refined fluorosilicic acid is prepared by the following steps:
将浓度为35%的原料氟硅酸由原料储罐抽至氟硅酸勾兑槽，再加入水勾兑成12%的浓度后，送入压滤机压滤，含硅滤渣返回勾兑槽回用，滤液送至氟硅酸储存罐备用。The raw material fluorosilicic acid with a concentration of 35% is pumped from the raw material storage tank to the fluorosilicic acid blending tank, and then water is added to blend it into a concentration of 12%. It is then sent to a filter press for filtration, and the silicon-containing filter residue is returned to the blending tank for reuse, and the filtrate is sent to the fluorosilicic acid storage tank for standby use.
实施例Example
一种氟硅酸钾生产方法，包括以下步骤，A method for producing potassium fluorosilicate comprises the following steps:
步骤S1、向氯化钾溶解槽内加入15m3母液、30m3水和13.5t氯化钾搅拌混合均匀，再加入浓度为6mol/L的盐酸调整溶液pH为5.3，开启搅拌器搅拌1.5h后，取氯化钾溶液分析化验，待氯化钾浓度为240g/L后，送入压滤机进行压滤，再将滤液送入氯化钾除杂槽进行除杂，除杂后的滤液再送入压滤机进行压滤，压滤后的滤液储存在氯化钾贮槽中备用；Step S1, add 15m3 of mother liquor, 30m3 of water and 13.5t of potassium chloride into a potassium chloride dissolving tank and stir and mix evenly, then add hydrochloric acid with a concentration of 6mol/L to adjust the solution pH to 5.3, turn on the stirrer and stir for 1.5h, take the potassium chloride solution for analysis and testing, after the potassium chloride concentration reaches 240g/L, send it to a filter press for filtration, then send the filtrate to a potassium chloride impurity removal tank for impurity removal, and then send the filtrate after impurity removal to a filter press for filtration, and the filtrate after filtration is stored in a potassium chloride storage tank for standby use;
步骤S2、将氯化钾溶液和精制氟硅酸分别泵至氯化钾计量槽和氟硅酸计量槽进行计量，然后将计量后的9m3氯化钾溶液和7.5m3精制氟硅酸经管道同时送入合成槽内，并在常温常压下反应1h，待反应完成后，即得氟硅酸钾晶浆；Step S2, pumping the potassium chloride solution and the refined fluorosilicic acid to the potassium chloride metering tank and the fluorosilicic acid metering tank for metering, and then sending the measured 9m3 potassium chloride solution and 7.5m3 refined fluorosilicic acid into the synthesis tank through the pipeline at the same time, and reacting at room temperature and pressure for 1h. After the reaction is completed, potassium fluorosilicate slurry is obtained;
步骤S3、将氟硅酸钾晶浆在离心机中离心，分离出产品和母液，母液送入母液储槽回用溶解氯化钾，产品用清水洗涤、离心，然后送入单筒烘干回转窑中进行烘干，烘干后的产品通过单层振动筛进行筛分，区分出合格产品和不合格产品，不合格产品经离心、洗涤后加入氯化钾溶解槽，合格产品经自动包装机包装成型，即得氟硅酸钾。Step S3, centrifuging the potassium fluorosilicate slurry in a centrifuge to separate the product and the mother liquor, sending the mother liquor to the mother liquor storage tank for reuse to dissolve potassium chloride, washing the product with clean water, centrifuging, and then sending it to a single-drum drying rotary kiln for drying, the dried product is sieved by a single-layer vibrating screen to distinguish qualified products from unqualified products, the unqualified products are added to the potassium chloride dissolution tank after centrifugation and washing, and the qualified products are packaged and formed by an automatic packaging machine to obtain potassium fluorosilicate.
精制氟硅酸，由以下步骤制备：Refined fluorosilicic acid is prepared by the following steps:
将浓度为40%的原料氟硅酸由原料储罐抽至氟硅酸勾兑槽，再加入水勾兑成12%的浓度后，送入压滤机压滤，含硅滤渣返回勾兑槽回用，滤液送至氟硅酸储存罐备用。The raw material fluorosilicic acid with a concentration of 40% is pumped from the raw material storage tank to the fluorosilicic acid blending tank, and then water is added to blend it into a concentration of 12%. It is then sent to a filter press for filtration, and the silicon-containing filter residue is returned to the blending tank for reuse, and the filtrate is sent to the fluorosilicic acid storage tank for standby use.
在说明书的描述中，参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of the specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
以上内容仅仅是对本发明的构思所作的举例和说明，所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离发明的构思或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.
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| SU632650A1 (en) * | 1976-11-03 | 1978-11-15 | Предприятие П/Я А-1619 | Method of obtaining potassium silicofluoride |
| RU2095311C1 (en) * | 1995-08-01 | 1997-11-10 | Открытое акционерное общество "Чепецкий механический завод" | Method of potassium silicofluoride producing |
| CN104211068A (en) * | 2014-09-18 | 2014-12-17 | 福建省漳平展鹏化工有限公司 | Preparation method of large granular potassium fluosilicate |
| CN117602629B (en) * | 2023-11-27 | 2024-09-13 | 衡阳市东氟新材料股份有限公司 | Production method of potassium fluosilicate |
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| CN1396113A (en) * | 2002-07-03 | 2003-02-12 | 夏克立 | Process for continuously preparing big-crystal sodium (or potassium) fluosilicate |
| CN102557040B (en) * | 2011-12-14 | 2013-10-23 | 铜陵化学工业集团有限公司 | Comprehensive utilization method of byproduct, namely fluorosilicic acid, of phosphate fertilizer |
| CN105174269B (en) * | 2015-09-14 | 2017-07-28 | 福建省漳平市九鼎氟化工有限公司 | A kind of technique that potassium fluosilicate is reclaimed in potassium fluotitanate production process |
| CN115385341B (en) * | 2022-09-27 | 2024-04-16 | 江西拓泓新材料有限公司 | Method for preparing potassium fluosilicate by recycling acid wastewater generated in tantalum-niobium wet smelting |
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| SU632650A1 (en) * | 1976-11-03 | 1978-11-15 | Предприятие П/Я А-1619 | Method of obtaining potassium silicofluoride |
| RU2095311C1 (en) * | 1995-08-01 | 1997-11-10 | Открытое акционерное общество "Чепецкий механический завод" | Method of potassium silicofluoride producing |
| CN104211068A (en) * | 2014-09-18 | 2014-12-17 | 福建省漳平展鹏化工有限公司 | Preparation method of large granular potassium fluosilicate |
| CN117602629B (en) * | 2023-11-27 | 2024-09-13 | 衡阳市东氟新材料股份有限公司 | Production method of potassium fluosilicate |
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