CN102976378A - Calcium aluminate powder production method - Google Patents
Calcium aluminate powder production method Download PDFInfo
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- CN102976378A CN102976378A CN2012105723987A CN201210572398A CN102976378A CN 102976378 A CN102976378 A CN 102976378A CN 2012105723987 A CN2012105723987 A CN 2012105723987A CN 201210572398 A CN201210572398 A CN 201210572398A CN 102976378 A CN102976378 A CN 102976378A
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- calcium aluminate
- aluminate powder
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- aluminum dross
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Abstract
The invention discloses a calcium aluminate powder production method which comprises the following steps: (1) adding waste aluminum slag into hydrochloric acid, and stirring to obtain polymerized aluminum chloride solution and polymerized waste aluminum slag; and (2) performing ball milling on the polymerized waste aluminum slag obtained in the step (1) and limestone, evenly mixing, adding into a rotary kiln, sintering into clinker, and milling into calcium aluminate powder. The waste aluminum slag is used as the raw material, so that the cost can be greatly lowered, and the benefit of 100 Yuan/ton can be increased; and the acid dissolution rate is above 95%, and the calcium aluminate powder can be returned to the step (1) for the preparation of the polymerized aluminum chloride solution, so that the waste slag content is low, and the waste aluminum slag is fully utilized, thereby solving the problem on the secondary pollution of the waste slag.
Description
Technical field
The present invention relates to a kind of production method of calcium aluminate powder, particularly a kind of method of producing calcium aluminate powder with aluminum dross.
Background technology
Along with the sustainable development of national economy, the demand of the production of calcium aluminate powder and various raw-material use constantly increase.The technique of existing production calcium aluminate powder mainly is that under the rotary kiln high temperature action, sintering forms after adding Wingdale process crushing drying, ball milling with alumine.Produce the main raw material alumine of calcium aluminate powder, proportion is more than 50% in product.And require the content of aluminium sesquioxide in the alumine must be greater than more than 70%, the content of silicon-dioxide be less than 8%.The market value of bauxitic clay is all more than 600 yuan/tons now.Calcium aluminate powder per ton is with more than the 650kg, and cost is more than 390 yuan/tons.And this bauxitic clay of this kind belongs to nonrenewable resource, and its reserves are limited.Along with reserves constantly reduce, cost of winning constantly increases, the price continuous rise, so the also no longer disconnected increase of the production cost of calcium aluminate powder, therefore being badly in need of a kind of cheaply raw material replaces alumine.
At present, there is a large amount of aluminum dross in China, and aluminium sesquioxide content is 60-70%, and metallic aluminium content 7-10%, dioxide-containing silica are 3-5%, almost do not have loss on ignition, contain the ammonia nitrogen of part solubility.Aluminum dross contains high aluminium content, and therefore the market value of aluminum dross becomes the optimal selection of preparation calcium aluminate powder below 100 yuan/tons.
Summary of the invention
The production method that the purpose of this invention is to provide a kind of calcium aluminate powder solves the deficiencies in the prior art, reduces production costs, and improves utilization of waste material, increases benefit.
The production method of calcium aluminate powder of the present invention, production stage is:
(1) aluminum dross is joined in the hydrochloric acid stirs, obtain polymeric aluminum chlorides solution and polymerization aluminum dross;
(2) get polymerization aluminum dross and the Wingdale ball milling that step (1) obtains and mix, add rotary kiln, sinter grog into after, grinding is made calcium aluminate powder.
The temperature of reaction of step (1) is 65-90 ℃.
The weight ratio of aluminum dross and hydrochloric acid is 1:4.5-5.5, and wherein, the mass percent of hydrochloric acid is 20%.
When processing aluminum dross, dilute hydrochloric acid does not react with aluminium sesquioxide only with the reaction of the metallic aluminium in the aluminum dross, can also be with the impurity in the aluminum dross, and particularly ammonia nitrogen removal falls, and reduces the excessive cause danger of pressure.The polymeric aluminum chlorides solution of gained can directly be used as water purification agent.
The stirring velocity of step (1) is 45-55 rev/min; Churning time is 2.5-3.5 hour.
The mass percent of aluminium sesquioxide is 7.5-8% in the middle gained polymeric aluminum chlorides solution of step (1).
The weight percentage of aluminium sesquioxide is 65-75% in step (1) the polymerization aluminum dross.
The weight ratio of polymerization aluminum dross and Wingdale is 50-65:35-50 in the step (2).
Sintering temperature is 1200-1300 ℃ in the step (2).
Sintering time is 3-4 hour in the step (2).
Gained calcium aluminate powder, aluminium sesquioxide weight percentage are 45-53%, and the calcium oxide weight percentage is 26-40%, and sour solubility rate is more than 95%.
Described calcium aluminate powder returns step (1) again and makes polymeric aluminum chlorides solution.Calcium aluminate powder is the main raw material of polymerize aluminum chloride, and the waste residue amount is very little after the reaction.
Described calcium aluminate powder can be made refractory materials or steel mill's sweetening agent of Tai-Ace S 150 or sodium aluminate.
Compared with prior art, the present invention has following beneficial effect:
When making raw material with aluminum dross, greatly reduce cost, can increase by 100 yuan/tons benefit.
Because sour solubility rate more than 95%, returns step (1) and makes polymeric aluminum chlorides solution, the waste residue amount is very little, and aluminum dross takes full advantage of.
Polymerization aluminum dross utilizing after aluminum dross is produced polymeric aluminum chlorides solution can reuse the production polymeric aluminum chlorides solution, has solved the secondary pollution of waste residue.
Embodiment
The present invention will be further described below in conjunction with embodiment.
Embodiment 1
Each composition weight percentage of aluminum dross is: aluminium: 10%, aluminium sesquioxide: 65%, silicon-dioxide: 3%.
Getting aluminum dross 1000kg, to add mass percent be 20% dilute hydrochloric acid 5000kg, the control temperature of reaction is 65 ℃, 50 rev/mins of lower stirrings 3 hours of low whipping speed obtain containing the polymeric aluminum chlorides solution 4500kg of aluminium sesquioxide 8%, the waste residue 860kg of aluminium sesquioxide weight percentage 74%.
Get the polymerization aluminum dross 500g of aluminium sesquioxide weight percentage 74%, add Wingdale 500g, 1280 ℃ of lower calcinings 3 hours, get the 750g calcium aluminate powder.The mass percent of aluminium sesquioxide is 49.3% in the calcium aluminate powder, the mass percent of calcium oxide is 36%.
Embodiment 2
Each composition weight percentage of aluminum dross is: aluminium: 9%, aluminium sesquioxide: 70%, silicon-dioxide: 4%.
Getting aluminum dross 1000kg, to add mass percent be 20% dilute hydrochloric acid 5000kg, the control temperature of reaction is 80 ℃, 48 rev/mins of lower stirrings 3.2 hours of low whipping speed obtain containing the polymeric aluminum chlorides solution 4600kg of aluminium sesquioxide 7.5%, the waste residue 880kg of aluminium sesquioxide weight percentage 70%.
Get the polymerization aluminum dross 520g of aluminium sesquioxide weight percentage 70%, add Wingdale 480g, 1200 ℃ of lower calcinings 3.3 hours, get the 758g calcium aluminate powder.The mass percent of aluminium sesquioxide is 48.76% in the calcium aluminate powder, the mass percent of calcium oxide is 34.8%.
Embodiment 3
Each composition weight percentage of aluminum dross is: aluminium: 9.5%, aluminium sesquioxide: 60%, silicon-dioxide: 5%.
Getting aluminum dross 1000kg, to add mass percent be 20% dilute hydrochloric acid 4800kg, the control temperature of reaction is 90 ℃, 52 rev/mins of lower stirrings 2.8 hours of low whipping speed obtain containing the polymeric aluminum chlorides solution 4450kg of aluminium sesquioxide 7.5%, the waste residue 870kg of aluminium sesquioxide weight percentage 68%.
Get the polymerization aluminum dross 550g of aluminium sesquioxide weight percentage 68%, add Wingdale 450g, 1300 ℃ of lower calcinings 3.5 hours, get the 770g calcium aluminate powder.The mass percent of aluminium sesquioxide is 48.57% in the calcium aluminate powder, the mass percent of calcium oxide is 32.14%.
Embodiment 4
Each composition weight percentage of aluminum dross is: aluminium: 8%, aluminium sesquioxide: 65%, silicon-dioxide: 4%.
Getting aluminum dross 1000kg, to add mass percent be 20% dilute hydrochloric acid 5000kg, the control temperature of reaction is 65 ℃, 45 rev/mins of lower stirrings 3.5 hours of low whipping speed obtain containing the polymeric aluminum chlorides solution 4550kg of aluminium sesquioxide 7%, the waste residue 865kg of aluminium sesquioxide weight percentage 65%.
Get the polymerization aluminum dross 590g of aluminium sesquioxide weight percentage 65%, add Wingdale 410g, 1250 ℃ of lower calcinings 4 hours, get the 763g calcium aluminate powder.The mass percent of aluminium sesquioxide is 50.32% in the calcium aluminate powder, the mass percent of calcium oxide is 31.43%.
Embodiment 5
Each composition weight percentage of aluminum dross is: aluminium: 7%, aluminium sesquioxide: 68%, silicon-dioxide: 5%.
Getting aluminum dross 1000kg, to add mass percent be 20% dilute hydrochloric acid 5300kg, the control temperature of reaction is 75 ℃, 55 rev/mins of lower stirrings 2.5 hours of low whipping speed obtain containing the polymeric aluminum chlorides solution 4000kg of aluminium sesquioxide 7.5%, the waste residue 850kg of aluminium sesquioxide weight percentage 75%.
Get the polymerization aluminum dross 640g of aluminium sesquioxide weight percentage 75%, add Wingdale 360g, 1230 ℃ of lower calcinings 3.8 hours, get the 800g calcium aluminate powder.The mass percent of aluminium sesquioxide is 52.62% in the calcium aluminate powder, the mass percent of calcium oxide is 26.21%.
Get the 500g calcium aluminate powder and turn back to step (1), add in the dilute hydrochloric acid, the control temperature of reaction is 75 ℃, and 55 rev/mins of lower stirrings 2.5 hours of low whipping speed obtain polymeric aluminum chlorides solution.
Claims (10)
1. the production method of a calcium aluminate powder is characterized in that, adopts aluminum dross as raw material, and step is as follows:
(1) aluminum dross is joined in the hydrochloric acid stirs, obtain polymeric aluminum chlorides solution and polymerization aluminum dross;
(2) get polymerization aluminum dross and the Wingdale ball milling that step (1) obtains and mix, add rotary kiln, sinter grog into after, grinding is made calcium aluminate powder.
2. the production method of calcium aluminate powder according to claim 1 is characterized in that, the temperature of reaction of step (1) is 65-90 ℃.
3. the production method of calcium aluminate powder according to claim 1 is characterized in that, the weight ratio of aluminum dross and hydrochloric acid is 1:4.5-5.5 in the step (1).
4. the production method of calcium aluminate powder according to claim 1 is characterized in that, the stirring velocity of step (1) is 45-55 rev/min; Churning time is 2.5-3.5 hour.
5. the production method of calcium aluminate powder according to claim 1 is characterized in that, the massfraction of aluminium sesquioxide is 7.5-8% in the middle polymeric aluminum chlorides solution of step (1).
6. the production method of calcium aluminate powder according to claim 1 is characterized in that, the weight percentage of aluminium sesquioxide is 65-75% in step (1) the polymerization aluminum dross.
7. the production method of calcium aluminate powder according to claim 1 is characterized in that, the weight ratio of polymerization aluminum dross and Wingdale is 50-65:35-50 in the step (2).
8. the production method of calcium aluminate powder according to claim 1 is characterized in that, sintering temperature is 1200-1300 ℃ in the step (2).
9. the production method of calcium aluminate powder according to claim 1 is characterized in that, sintering time is 3-4 hour in the step (2).
10. the production method of calcium aluminate powder according to claim 1 is characterized in that, the calcium aluminate powder of gained returns step (1) and makes polymeric aluminum chlorides solution.
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| CN201210572398.7A CN102976378B (en) | 2012-12-25 | 2012-12-25 | Calcium aluminate powder production method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692727A (en) * | 2016-02-17 | 2016-06-22 | 嘉善海峡净水灵化工有限公司 | Method for preparing multifunctional water treatment agent |
| CN106241843A (en) * | 2016-07-19 | 2016-12-21 | 武汉理工大学 | A kind of method that aluminium hydroxide is prepared in polyaluminium waste slag of aluminum acid system recovery |
| CN109928472A (en) * | 2019-03-04 | 2019-06-25 | 山东铝晖环保科技有限公司 | By the method for aluminium ash, the water purification agent of sulfuric acid and the preparation of optional red mud containing polyaluminium sulfate |
| CN115974119A (en) * | 2022-12-01 | 2023-04-18 | 百色实华环保科技有限公司 | Method for preparing polyaluminum chloride from medium-high aluminum slag in electrolytic aluminum overhaul slag |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1053411A (en) * | 1996-08-08 | 1998-02-24 | Arutetsuku Amino Kk | Production of calcium aluminate |
| KR20060056179A (en) * | 2004-11-20 | 2006-05-24 | 주식회사 천호기업 | Water treating composition using the aluminium dross |
| CN101172635A (en) * | 2007-11-29 | 2008-05-07 | 上海交通大学 | Method for producing calcium aluminate with waste aluminum gray |
| US20100193733A1 (en) * | 2006-05-16 | 2010-08-05 | Harsco Corporation | Regenerated calcium aluminate product and process of manufacture |
| CN101913634B (en) * | 2010-08-28 | 2012-07-11 | 河南科泰净水材料有限公司 | Processing method for recycling aluminum dross |
| CN102674422A (en) * | 2012-05-22 | 2012-09-19 | 李松 | Method for preparing flocculant liquid polyaluminum chloride from aluminum ash |
-
2012
- 2012-12-25 CN CN201210572398.7A patent/CN102976378B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1053411A (en) * | 1996-08-08 | 1998-02-24 | Arutetsuku Amino Kk | Production of calcium aluminate |
| KR20060056179A (en) * | 2004-11-20 | 2006-05-24 | 주식회사 천호기업 | Water treating composition using the aluminium dross |
| US20100193733A1 (en) * | 2006-05-16 | 2010-08-05 | Harsco Corporation | Regenerated calcium aluminate product and process of manufacture |
| CN101172635A (en) * | 2007-11-29 | 2008-05-07 | 上海交通大学 | Method for producing calcium aluminate with waste aluminum gray |
| CN101913634B (en) * | 2010-08-28 | 2012-07-11 | 河南科泰净水材料有限公司 | Processing method for recycling aluminum dross |
| CN102674422A (en) * | 2012-05-22 | 2012-09-19 | 李松 | Method for preparing flocculant liquid polyaluminum chloride from aluminum ash |
Non-Patent Citations (3)
| Title |
|---|
| 《中国非金属矿工业导刊》 20121025 张延大 合理利用资源生产铝酸钙精炼渣的研究" 第19-21页 1-10 , 第5期 * |
| 张延大: "合理利用资源生产铝酸钙精炼渣的研究"", 《中国非金属矿工业导刊》 * |
| 苏晓梅等: "铝灰渣高效利用的试验研究", 《华中师范大学学报（自然科学版）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692727A (en) * | 2016-02-17 | 2016-06-22 | 嘉善海峡净水灵化工有限公司 | Method for preparing multifunctional water treatment agent |
| CN106241843A (en) * | 2016-07-19 | 2016-12-21 | 武汉理工大学 | A kind of method that aluminium hydroxide is prepared in polyaluminium waste slag of aluminum acid system recovery |
| CN109928472A (en) * | 2019-03-04 | 2019-06-25 | 山东铝晖环保科技有限公司 | By the method for aluminium ash, the water purification agent of sulfuric acid and the preparation of optional red mud containing polyaluminium sulfate |
| CN115974119A (en) * | 2022-12-01 | 2023-04-18 | 百色实华环保科技有限公司 | Method for preparing polyaluminum chloride from medium-high aluminum slag in electrolytic aluminum overhaul slag |
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