CN102653408A - Method for producing light-weight magnesium carbonate by using phosphate tailings with high magnesium content - Google Patents
Method for producing light-weight magnesium carbonate by using phosphate tailings with high magnesium content Download PDFInfo
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- CN102653408A CN102653408A CN2012101558196A CN201210155819A CN102653408A CN 102653408 A CN102653408 A CN 102653408A CN 2012101558196 A CN2012101558196 A CN 2012101558196A CN 201210155819 A CN201210155819 A CN 201210155819A CN 102653408 A CN102653408 A CN 102653408A
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- magnesium
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- mine tailing
- carbonate light
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Abstract
The invention discloses a method for producing light-weight magnesium carbonate by using phosphate tailings with high magnesium content. The method comprises the following steps of: calcining the phosphate tailings with high magnesium content into calcined dolomite at a high temperature; mixing the calcined dolomite and water according to a certain proportion to obtain a slaking solution; supplementing water of a certain proportion into the slaking solution, feeding gas with carbon dioxide into the solution, and performing carbonization reaction to obtain a carbonized solution; after the reaction is finished, filtering the carbonized solution to obtain filtrate, namely a magnesium potassium chromate solution; performing pyrolysis on the magnesium potassium chromate solution, thus obtaining magnesium carbonate sediments; and filtering and drying the sediments to obtain the light-weight magnesium carbonate product. By using the method, waste is turned into treasure, so that magnesium resources in the phosphate tailings with high magnesium content are recycled; the process is simple and low in cost; and the economic and environmental benefits are remarkable.
Description
Technical field
The present invention relates to chemical technology field, specifically is a kind of method of utilizing discarded object height magnesium phosphorus mine tailing production Magnesium Carbonate Light 41-45.
Background technology
Because the phosphorus ore great majority of China are mid low grade phosphate rock, generally need become commodity phosphorus concentrate through chemical flotation beneficiation and enrichment.To be Rock Phosphate (72Min BPL) obtain the sub product behind the phosphorus concentrate, its P through floating and enriching to high magnesium phosphorus mine tailing
2O
5Content is 3%～8.5%, and MgO content is 15%～21%, belongs to high magnesium low-grade phosphorus ore.For the dressing-works of producing 3000000 tons of phosphorus concentrate per year, annually produce about 1,000,000 tons high magnesium phosphorus mine tailing, contain 180,000 tons the MgO of having an appointment.For a long time,, utilize approach few, be used as waste by enterprise usually and adopt the mode of storing up to handle, the magnesium resource in this mine tailing is wasted, go back land occupation, pollute surrounding enviroment because this mine tailing is phosphorous lower.
Magnesium Carbonate Light 41-45 is a kind of important inorganic chemical product; Except as preparation Natural manganese dioxide and the magnesium salts series product, mainly be used as the good weighting agent and the strengthening agent of rubber item, the fire resistant lagging material; Insulating material; And be used for shipbuilding, boiler manufacturing, and industries such as coating, printing ink, pottery, glass, medicine, daily-use chemical industry, Application Areas is extensive.The method of producing Magnesium Carbonate Light 41-45 mainly contains magnesite ammonium carbonate method, rhombspar carborization and bittern soda ash method etc.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming and a kind of method of utilizing high magnesium phosphorus mine tailing to produce Magnesium Carbonate Light 41-45 is provided, this method can be recycled the magnesium resource in the high magnesium phosphorus mine tailing, have that cost is low, technology simply, the characteristics of superior product quality.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: a kind of method of utilizing high magnesium phosphorus mine tailing to produce Magnesium Carbonate Light 41-45 may further comprise the steps:
(1) with high magnesium phosphorus mine tailing 850～1180 ℃ of down calcinings, burn till forge white;
(2) the said Bai Yushui that forges is mixed by weight 1:4～40, stir digestion 10～100 minutes down for 20～90 ℃, obtain Digestive system in temperature;
(3) in said Digestive system make up water to make the Digestive system solid content be massfraction 2%～15%; In Digestive system, feeding the gas contain carbonic acid gas again carries out carburizing reagent and obtains carbodiimide solution under 10～35 ℃; Reduce to 6.6～8.0 o'clock stopped reaction in the pH of carbodiimide solution value; Carbodiimide solution is filtered, and filtrating is heavy magnesium water, and filter cake is mainly lime carbonate.
(4) with said heavy magnesium water at 80～105 ℃ of following pyrolysis 0.2～3h, obtain Magnesium Carbonate Light 41-45 deposition, obtain the Magnesium Carbonate Light 41-45 filter cake after the filtration, filtrate water is back to digestion, carbonation process.
(5) said Magnesium Carbonate Light 41-45 filter cake is dried by the fire 0.5～5h down at 90～220 ℃ and obtain the Magnesium Carbonate Light 41-45 product.
Above-mentioned high magnesium phosphorus mine tailing is that phosphorus ore obtains the mineral that contain low-grade Vanadium Pentoxide in FLAKES that discharge behind the phosphorus concentrate of higher-grade Vanadium Pentoxide in FLAKES in ore dressing process, contains P
2O
5Be 2%～10%, MgO is 15%～21%, and CaO is 28%～42%.
The above-mentioned gas that contains carbonic acid gas is the gas of 20%～100% carbonic acid gas volume(tric)fraction, the dioxide gas that produces in the time of can being the calcining of high magnesium phosphorus mine tailing.
The present invention has following advantage:
1, the present invention is a raw material with industrial waste object height magnesium phosphorus mine tailing, and utilization of waste material economizes on resources, and production cost is low, has widened the raw material range of producing Magnesium Carbonate Light 41-45.
2, the present invention is a raw material with high magnesium phosphorus mine tailing, except that power consumption, needs other industrial raw material to participate in producing hardly, and technology is simple and the magnesium recovery is high; Technology of the present invention can be applied to a large amount of processing of high magnesium phosphorus mine tailing, for the Rock Phosphate (72Min BPL) exploitation provides a kind of effective ways with the high magnesium phosphorus of ore dressing business processes mine tailing.
3, the Magnesium Carbonate Light 41-45 of the present invention's production meets industrial hydration magnesium basic carbonate relevant criterion, superior product quality.
4, production process of the present invention is pollution-free, meets to clean manufacturing technique requirent, has solved the high magnesium phosphorus of raw material mine tailing land occupation resource, problem of environment pollution caused, turns waste into wealth, and has good economic benefit and important environment protection significance.
Embodiment
For the ease of understanding the present invention, below examples of implementation set forth content of the present invention, content of the present invention is not limited only to following embodiment.
Embodiment 1
High magnesium phosphorus mine tailing chemical ingredients: P
2O
57.04%, MgO16.86%, CaO37.48%
Take by weighing tail magnesium phosphorus mine tailing 100g 980 ℃ of calcinings down, obtain forging white 61.4g.Forge white and 700g water and stirred 40 minutes down, obtain Digestive system at 80 ℃.In Digestive system, replenish 800g water, the gas that in Digestive system, feeds 35% carbonic acid gas volume(tric)fraction again carries out carburizing reagent and obtains carbodiimide solution under 20 ℃, reduce to 6.7 o'clock stopped reaction in the pH of carbodiimide solution value, and carbodiimide solution is filtered, and filtrating is heavy magnesium water.Said heavy magnesium water obtains the Magnesium Carbonate Light 41-45 deposition at 95 ℃ of following pyrolysis 0.5h, obtains the Magnesium Carbonate Light 41-45 filter cake after the filtration, filter cake is dried by the fire 3h down at 150 ℃ obtain the Magnesium Carbonate Light 41-45 product.
Embodiment 2
High magnesium phosphorus mine tailing chemical ingredients: P
2O
56.00%, MgO18.25%, CaO36.82%
Take by weighing tail magnesium phosphorus mine tailing 100g 950 ℃ of down calcinings, obtain forging white 59.8g, forge and whitely stirred 30 minutes down at 80 ℃, obtain Digestive system with 500g water.In Digestive system, replenish 600g water, the gas that in Digestive system, feeds 30% carbonic acid gas volume(tric)fraction again carries out carburizing reagent and obtains carbodiimide solution under 25 ℃, reduce to 6.9 o'clock stopped reaction in the pH of carbodiimide solution value, and carbodiimide solution is filtered, and filtrating is heavy magnesium water.Said heavy magnesium water obtains the Magnesium Carbonate Light 41-45 deposition at 93 ℃ of following pyrolysis 0.8h, obtains the Magnesium Carbonate Light 41-45 filter cake after the filtration, filter cake is dried by the fire 2h down at 180 ℃ obtain the Magnesium Carbonate Light 41-45 product.
Embodiment 3
High magnesium phosphorus mine tailing chemical ingredients: P
2O
56.35%, MgO18.59%, CaO37.01%
Take by weighing tail magnesium phosphorus mine tailing 100g 960 ℃ of down calcinings, obtain forging white 60.5g, forge and whitely stirred 30 minutes down at 85 ℃, obtain Digestive system with 430g water.In Digestive system, replenish 900g water, the gas that in Digestive system, feeds 27% carbonic acid gas volume(tric)fraction again carries out carburizing reagent and obtains carbodiimide solution under 30 ℃, reduce to 6.8 o'clock stopped reaction in the pH of carbodiimide solution value, and carbodiimide solution is filtered, and filtrating is heavy magnesium water.Said heavy magnesium water obtains the Magnesium Carbonate Light 41-45 deposition at 97 ℃ of following pyrolysis 0.5h, obtains the Magnesium Carbonate Light 41-45 filter cake after the filtration, filter cake is dried by the fire 4h down at 120 ℃ obtain the Magnesium Carbonate Light 41-45 product.
Embodiment 4
High magnesium phosphorus mine tailing chemical ingredients: P
2O
59.84%, MgO15.03%, CaO41.79%
Take by weighing tail magnesium phosphorus mine tailing 100g 1180 ℃ of down calcinings, obtain forging white 65.3g, forge and whitely stirred 100 minutes down at 90 ℃, obtain Digestive system with 262g water.In Digestive system, replenish 110g water, the gas that in Digestive system, feeds 20% carbonic acid gas volume(tric)fraction again carries out carburizing reagent and obtains carbodiimide solution under 10 ℃, reduce to about 8.0 o'clock stopped reaction in the pH of carbodiimide solution value, and carbodiimide solution is filtered, and filtrating is heavy magnesium water.Said heavy magnesium water obtains the Magnesium Carbonate Light 41-45 deposition at 105 ℃ of following pyrolysis 0.2h, obtains the Magnesium Carbonate Light 41-45 filter cake after the filtration, filter cake is dried by the fire 0.5h down at 220 ℃ obtain the Magnesium Carbonate Light 41-45 product.
Embodiment 5
High magnesium phosphorus mine tailing chemical ingredients: P
2O
52.15%, MgO20.93%, CaO28.15%
Take by weighing tail magnesium phosphorus mine tailing 100g 850 ℃ of down calcinings, obtain forging white 56.4g, forge and whitely stirred 10 minutes down at 20 ℃, obtain Digestive system with 2256g water.In Digestive system, replenish 508g water, the gas that in Digestive system, feeds 99% carbonic acid gas volume(tric)fraction again carries out carburizing reagent and obtains carbodiimide solution under 22 ℃, reduce to about 6.6 o'clock stopped reaction in the pH of carbodiimide solution value, and carbodiimide solution is filtered, and filtrating is heavy magnesium water.Said heavy magnesium water obtains the Magnesium Carbonate Light 41-45 deposition at 80 ℃ of following pyrolysis 3h, obtains the Magnesium Carbonate Light 41-45 filter cake after the filtration, filter cake is dried by the fire 5h down at 90 ℃ obtain the Magnesium Carbonate Light 41-45 product.
Claims (3)
1. method of utilizing high magnesium phosphorus mine tailing to produce Magnesium Carbonate Light 41-45 is characterized in that it is made up of following steps:
(1) with high magnesium phosphorus mine tailing 850～1180 ℃ of down calcinings, burn till forge white;
(2) the said Bai Yushui that forges is mixed by weight 1:4～40, stir digestion 10～100 minutes down for 20～90 ℃, obtain Digestive system in temperature;
(3) in said Digestive system make up water to make the Digestive system solid content be massfraction 2%～15%; In Digestive system, feeding the gas contain carbonic acid gas again carries out carburizing reagent and obtains carbodiimide solution under 10～35 ℃; Reduce to 6.6～8.0 o'clock stopped reaction in the pH of carbodiimide solution value; Carbodiimide solution is filtered, and filtrating is heavy magnesium water, and filter cake is mainly lime carbonate;
(4) with said heavy magnesium water at 80～105 ℃ of following pyrolysis 0.2～3h, obtain Magnesium Carbonate Light 41-45 deposition, obtain the Magnesium Carbonate Light 41-45 filter cake after the filtration, filtrate water is back to digestion, carbonation process;
(5) said Magnesium Carbonate Light 41-45 filter cake is dried by the fire 0.5～5h down at 90～220 ℃ and obtain the Magnesium Carbonate Light 41-45 product.
2. according to the said a kind of method of utilizing high magnesium phosphorus mine tailing to produce Magnesium Carbonate Light 41-45 of claim 1; It is characterized in that described high magnesium phosphorus mine tailing is that phosphorus ore obtains the mineral that contain low-grade Vanadium Pentoxide in FLAKES that discharge behind the phosphorus concentrate of higher-grade Vanadium Pentoxide in FLAKES in ore dressing process, contains P
2O
5Be 2%～10%, MgO is 15%～21%, and CaO is 28%～42%.
3. according to the said a kind of method of utilizing high magnesium phosphorus mine tailing to produce Magnesium Carbonate Light 41-45 of claim 1; It is characterized in that the described gas that contains carbonic acid gas is the gas of 20%～100% carbonic acid gas volume(tric)fraction, the dioxide gas that produces in the time of can being the calcining of high magnesium phosphorus mine tailing.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923739A (en) * | 2012-11-09 | 2013-02-13 | 瓮福（集团）有限责任公司 | Method for utilizing high-magnesium phosphate tailings to produce magnesium fluoride and by-product calcium carbonate |
| CN103979584A (en) * | 2014-06-03 | 2014-08-13 | 李广凡 | Process for preparing light magnesium carbonate from boron mud |
| CN103979583A (en) * | 2014-05-28 | 2014-08-13 | 李广凡 | Method for preparing light magnesium carbonate by using boric sludge carbonization method |
| CN104860278A (en) * | 2015-05-06 | 2015-08-26 | 贵州省化工研究院 | Method for extracting phosphate concentrate from phosphate tailings and cooperatively producing calcium carbonate and magnesium oxide |
| CN104925772A (en) * | 2015-05-06 | 2015-09-23 | 贵州省化工研究院 | Process for preparing phosphate concentrate and byproduct magnesium-containing calcium carbonate from medium-low-grade phosphorite |
| CN109052345A (en) * | 2018-08-29 | 2018-12-21 | 石门县金子山新材料科技有限公司 | A kind of low-grade silicon calcium quality ore method for separating reducing content of magnesia |
| CN109133018A (en) * | 2018-08-29 | 2019-01-04 | 石门县金子山新材料科技有限公司 | A kind of technique that difficulty selects low grade collophanite to comprehensively utilize |
| CN109790044A (en) * | 2016-07-27 | 2019-05-21 | 国家科学研究学院 | The magnesia of low-carbon emission produces |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935656A (en) * | 2005-09-22 | 2007-03-28 | 中南大学 | Method for producing magnesium salt utilizing exhaust gas and waste calcined dolomite for smelting magnesium by silicon-thermal method |
-
2012
- 2012-05-20 CN CN2012101558196A patent/CN102653408A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935656A (en) * | 2005-09-22 | 2007-03-28 | 中南大学 | Method for producing magnesium salt utilizing exhaust gas and waste calcined dolomite for smelting magnesium by silicon-thermal method |
Non-Patent Citations (4)
| Title |
|---|
| ZAFAR IQBAL ZAFAR ET AL.: "《Optimization of thermal beneficiation of a low grade dolomitic phosphate rock》", 《INTERNATIONAL JOURNAL OF MINERAL PROCESSING》 * |
| 孔繁振: "《磷矿浮选尾矿煅烧铵盐法综合回收镁、磷试验研究》", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 李文澍等: "《石灰窑气的回收与利用》", 30 December 1990, 中国建筑工业出版社 * |
| 韩敏芳: "《非金属矿物材料制备与工艺》", 31 July 2004, 化学工业出版社 材料科学与工程出版中心 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923739A (en) * | 2012-11-09 | 2013-02-13 | 瓮福（集团）有限责任公司 | Method for utilizing high-magnesium phosphate tailings to produce magnesium fluoride and by-product calcium carbonate |
| CN103979583A (en) * | 2014-05-28 | 2014-08-13 | 李广凡 | Method for preparing light magnesium carbonate by using boric sludge carbonization method |
| CN103979584A (en) * | 2014-06-03 | 2014-08-13 | 李广凡 | Process for preparing light magnesium carbonate from boron mud |
| CN104860278A (en) * | 2015-05-06 | 2015-08-26 | 贵州省化工研究院 | Method for extracting phosphate concentrate from phosphate tailings and cooperatively producing calcium carbonate and magnesium oxide |
| CN104925772A (en) * | 2015-05-06 | 2015-09-23 | 贵州省化工研究院 | Process for preparing phosphate concentrate and byproduct magnesium-containing calcium carbonate from medium-low-grade phosphorite |
| CN109790044A (en) * | 2016-07-27 | 2019-05-21 | 国家科学研究学院 | The magnesia of low-carbon emission produces |
| CN109052345A (en) * | 2018-08-29 | 2018-12-21 | 石门县金子山新材料科技有限公司 | A kind of low-grade silicon calcium quality ore method for separating reducing content of magnesia |
| CN109133018A (en) * | 2018-08-29 | 2019-01-04 | 石门县金子山新材料科技有限公司 | A kind of technique that difficulty selects low grade collophanite to comprehensively utilize |
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Application publication date: 20120905 |