CN103508478A - Method used for preparing calcium hydroxide from light calcium carbonate and active calcium oxide defective products - Google Patents
Method used for preparing calcium hydroxide from light calcium carbonate and active calcium oxide defective products Download PDFInfo
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- CN103508478A CN103508478A CN201310221461.7A CN201310221461A CN103508478A CN 103508478 A CN103508478 A CN 103508478A CN 201310221461 A CN201310221461 A CN 201310221461A CN 103508478 A CN103508478 A CN 103508478A
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Abstract
The invention discloses a method used for preparing calcium hydroxide from light calcium carbonate and active calcium oxide defective products. The method comprises following steps: (a) the light calcium carbonate defective products and the active calcium oxide defective products are mixed at a ratio of 2:1; (b) water is added into the mixture obtained in step (a); the solution is delivered into a turning gray plane, and is heated in the turning gray plane so as to obtain lime milk; and the lime mild is delivered into a round rotating sieve for sieving so as to remove impurities and residues larger than 325 meshes in the lime milk; and (c) the lime milk obtained in step (b) is delivered into a grader for air classification, and calcium hydroxide finished products smaller than 325 meshes are obtained by sieving at last, wherein in air classification processes, a negative pressure air compressor is used for providing power. According to the method, the light calcium carbonate defective products and the active calcium oxide defective products are subjected to a series of steps such as mixing, heating, sieving and grading, and the calcium hydroxide finished products smaller than 325 meshes are obtained by sieving.
Description
Technical field
The present invention relates to a kind of calcium hydroxide preparation method, especially a kind of method of utilizing light acids calcium and active calcium oxide defect ware to prepare calcium hydroxide.
Background technology
Calcium hydroxide is widely used in the fields such as sugaring, soda ash manufacture, calcium phosphate salt manufacture, chemical fibre, papermaking, metallurgy, power plant desulfurization, its market rate of utilization is high, but in daily ore extraction and subsequent production process, can produce a large amount of defect ware or waste residue, the present invention studies a kind of technology for light calcium carbonate slag and active calcium oxide slag production purification production calcium hydroxide for this reason, thereby improve the resource utilization of Nonrenewable resources, and produce certain economic benefit.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method that light acids calcium and active calcium oxide defect ware are prepared calcium hydroxide, utilizes above-mentioned two kinds of mineral waste purified hydrogen calcium oxide, improves resource utilization.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of light acids calcium and active calcium oxide defect ware are prepared the method for calcium hydroxide, and its innovative point is to comprise the steps:
A) active calcium oxide defect ware and light calcium carbonate defect ware are mixed, the ratio that both mix is 2: 1;
B) lime slaking machine is sent in mixture water mixing above-mentioned steps a being obtained, and utilizes the lime slaking machine acquisition milk of lime of heating, and then milk of lime material is sent into circle and is turned and sieve, impurity and assorted stone and residues more than 325 orders in removal milk of lime;
C) the milk of lime material obtaining in above-mentioned steps b is sent in grading machine and is carried out air classification, adopts the air compressor machine of negative pressure that power is provided in air classification process, finally obtains lower than 325 object calcium hydroxide finished products.
Further, the impurity obtaining in described step b and assorted stone and residues more than 325 orders utilize lift to send in overhang roll pulverizer to carry out grinding, obtain the building lime below 250 orders.
The invention has the advantages that: by mixing, heat, screening, classification series of processes, light acids calcium and active calcium oxide defect ware are carried out to calcium hydroxide preparation, through screening, obtain the calcium hydroxide finished product below 325 orders, practice shows, by above-mentioned technique, prepare calcium hydroxide, obtain yield rate more than 60%.
By to sieving out impurity and assorted stone and being greater than 325 order residues by overhang roll pulverizer grinding, obtain the building lime below 250 orders, thereby the utilization ratio of waste material is reached to 100% in addition.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Diagram is the process flow sheet that a kind of light acids calcium of the present invention and active calcium oxide defect ware are prepared the method for calcium hydroxide.
Embodiment
Light acids calcium of the present invention and active calcium oxide defect ware are prepared the method for calcium hydroxide, mainly comprise the steps: first, active calcium oxide defect ware and light calcium carbonate defect ware are mixed, the ratio that both mix is 2: 1, then both mixture water mixings are sent into lime slaking machine, utilize the lime slaking machine acquisition milk of lime of heating, then milk of lime material is sent into circle and turned and sieve, remove impurity in milk of lime and assorted stone and be greater than 325 object residues.Milk of lime raw material after screening, utilize lift to send to and in overhang roll pulverizer, carry out grinding, material after grinding is sent in grading machine and is carried out air classification, adopts the air compressor machine of negative pressure that power is provided in air classification process, finally obtains lower than 325 object calcium hydroxide finished products.By sieving out impurity and assorted stone and being greater than 325 order residues, by lift, send into overhang roll pulverizer grinding, obtain the building lime below 250 orders.
The interpolation of the operation of grading machine is that, in 45 micrometer ranges, relative grain size distributed area is 0.5 micron～45 microns in order to ensure finally obtaining calcium hydroxide particle diameter control in 325 orders, and specific area is greater than 42500cm
2/ cm
3.Utilize air compressor machine that the air-flow of negative pressure is provided, thereby under the air-flow environment of negative pressure, material, by the gestalt movement with eddy current, gets rid of to machine inwall particle larger in material, thereby makes it to lose centrifugal force, fall the slag-drip opening of machine inwall bottom.
Practice shows, by above-mentioned technique, prepares calcium hydroxide, obtains calcium hydroxide yield rate more than 60%, and the waste material producing in manufacture process, after grinding as building lime raw material, thereby make in whole slag manufacture process, its utilization ratio reaches 100%.
Claims (2)
1. light acids calcium and active calcium oxide defect ware are prepared a method for calcium hydroxide, it is characterized in that comprising the steps:
A) active calcium oxide defect ware and light calcium carbonate defect ware are mixed, the ratio that both mix is 2: 1;
B) lime slaking machine is sent in mixture water mixing above-mentioned steps a being obtained, and utilizes the lime slaking machine acquisition milk of lime of heating, and then milk of lime material is sent into circle and is turned and sieve, impurity and assorted stone and residues more than 325 orders in removal milk of lime;
C) the milk of lime material obtaining in above-mentioned steps b is sent in grading machine and is carried out air classification, adopts the air compressor machine of negative pressure that power is provided in air classification process, finally obtains lower than 325 object calcium hydroxide finished products.
2. a kind of light acids calcium according to claim 1 and active calcium oxide defect ware are prepared the method for calcium hydroxide, it is characterized in that: the impurity obtaining in described step b and assorted stone and residues more than 325 orders utilize lift to send in overhang roll pulverizer to carry out grinding, obtain the building lime below 250 orders.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310221461.7A CN103508478B (en) | 2013-06-05 | 2013-06-05 | A kind of method that precipitated calcium carbonate and active calcium oxide defect ware prepare calcium hydroxide |
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| CN201310221461.7A CN103508478B (en) | 2013-06-05 | 2013-06-05 | A kind of method that precipitated calcium carbonate and active calcium oxide defect ware prepare calcium hydroxide |
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| CN103508478A true CN103508478A (en) | 2014-01-15 |
| CN103508478B CN103508478B (en) | 2016-08-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192881A (en) * | 2014-08-06 | 2014-12-10 | 华南理工大学 | Method for preparing multipurpose solid waste slag by using return sand and return stone and application of solid waste slag |
| CN105776298A (en) * | 2016-05-17 | 2016-07-20 | 长沙市望城区湘怡钙业有限公司 | Preparation method of calcium hydroxide |
| CN106830715A (en) * | 2016-12-24 | 2017-06-13 | 建德市全新钙业有限公司 | A kind of method that utilization lime white and waste residue waste material produce calcium hydroxide |
| CN108726551A (en) * | 2018-06-22 | 2018-11-02 | 建德市全新钙业有限公司 | A kind of the comprehensive utilization production line and its production technology of precipitated calcium carbonate nano-calcium carbonate waste residue |
| CN114522638A (en) * | 2022-01-11 | 2022-05-24 | 山东师范大学 | Continuous production system and method for calcium hydroxide with controllable crystal morphology |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336420A (en) * | 2018-12-13 | 2019-02-15 | 四川和临科技发展有限公司 | A kind of production method of calcium hydroxide |
Citations (4)
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|---|---|---|---|---|
| CN1189814A (en) * | 1996-04-24 | 1998-08-05 | 矢桥工业株式会社 | Process for producing clacium hydroxide |
| CN101503208A (en) * | 2009-03-13 | 2009-08-12 | 杭州稳健钙业有限公司 | Process for preparing high concentration milky calcium hydroxide |
| CN101774620A (en) * | 2009-12-31 | 2010-07-14 | 常熟大众钙化物有限公司 | Method for preparing high-specific surface area calcium hydroxide for dry desulphurization |
| CN102531016A (en) * | 2011-12-30 | 2012-07-04 | 湖南省产商品质量监督检验院 | Production method of food-grade calcium hydroxide |
-
2013
- 2013-06-05 CN CN201310221461.7A patent/CN103508478B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189814A (en) * | 1996-04-24 | 1998-08-05 | 矢桥工业株式会社 | Process for producing clacium hydroxide |
| CN101503208A (en) * | 2009-03-13 | 2009-08-12 | 杭州稳健钙业有限公司 | Process for preparing high concentration milky calcium hydroxide |
| CN101774620A (en) * | 2009-12-31 | 2010-07-14 | 常熟大众钙化物有限公司 | Method for preparing high-specific surface area calcium hydroxide for dry desulphurization |
| CN102531016A (en) * | 2011-12-30 | 2012-07-04 | 湖南省产商品质量监督检验院 | Production method of food-grade calcium hydroxide |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192881A (en) * | 2014-08-06 | 2014-12-10 | 华南理工大学 | Method for preparing multipurpose solid waste slag by using return sand and return stone and application of solid waste slag |
| CN105776298A (en) * | 2016-05-17 | 2016-07-20 | 长沙市望城区湘怡钙业有限公司 | Preparation method of calcium hydroxide |
| CN106830715A (en) * | 2016-12-24 | 2017-06-13 | 建德市全新钙业有限公司 | A kind of method that utilization lime white and waste residue waste material produce calcium hydroxide |
| CN108726551A (en) * | 2018-06-22 | 2018-11-02 | 建德市全新钙业有限公司 | A kind of the comprehensive utilization production line and its production technology of precipitated calcium carbonate nano-calcium carbonate waste residue |
| CN114522638A (en) * | 2022-01-11 | 2022-05-24 | 山东师范大学 | Continuous production system and method for calcium hydroxide with controllable crystal morphology |
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| CN103508478B (en) | 2016-08-24 |
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Denomination of invention: Method used for preparing calcium hydroxide from light calcium carbonate and active calcium oxide defective products Effective date of registration: 20191231 Granted publication date: 20160824 Pledgee: Maya sub branch of Chizhou Jiuhua Rural Commercial Bank Co., Ltd Pledgor: Chizhou Lingzhi Huajian Material Technology Co., Ltd. Registration number: Y2019980001409 |
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Date of cancellation: 20211124 Granted publication date: 20160824 Pledgee: Maya sub branch of Chizhou Jiuhua Rural Commercial Bank Co.,Ltd. Pledgor: CHIZHOU LINGZHI HUAJIAN MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2019980001409 |
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Effective date of registration: 20220126 Address after: 247000 high tech Industrial Development Zone, Guichi District, Chizhou, Anhui Patentee after: ANHUI JINDING NEW MATERIAL Co.,Ltd. Address before: 247000 Lingzhi village, Ma Ya sub district office, Guichi District, Chizhou City, Anhui Province Patentee before: CHIZHOU LINGZHI HUAJIAN MATERIAL TECHNOLOGY Co.,Ltd. |
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