CN1603234A - Formula and technique for extracting potassium carbonate and aluminum hydroxide and preparing siliceous fertilizer using slate with rich kalium - Google Patents
Formula and technique for extracting potassium carbonate and aluminum hydroxide and preparing siliceous fertilizer using slate with rich kalium Download PDFInfo
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- CN1603234A CN1603234A CN 03143378 CN03143378A CN1603234A CN 1603234 A CN1603234 A CN 1603234A CN 03143378 CN03143378 CN 03143378 CN 03143378 A CN03143378 A CN 03143378A CN 1603234 A CN1603234 A CN 1603234A
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Abstract
The invention relates to a compounding recipe and technology to distill potassium carbonate and aluminum hydroxide by potassium-rich slate and to produce siliceous fertilizer. It belongs to fertilizer producing field. Its feature is that putting the potassium-rich slate ore and limestone into ball mill, cuber, rotary kilncalcnaton furnace, ball mill, digestion tank and filter according to calcium-silicon mol ratio. Then, part of rough potassium carbonate is used to confect correction liquor, and the other is used to gain potassium carbonate after concentration and crystallizing. The leached residue is rough potassium hydroxide, and pure potassium hydroxide would be gained by Bayer process technology. And other part is used to gain siliceous fertilizer after passing washer tank, drying apparatus and pulverizer. The invention could make the extraction rate of alumina reach to over 60% and that of kali reach to over 80%. It can transform the silicon element into siliceous fertilizer. The invention would not produce exhausted water and waste residue. Thus, the purpose of comprehensive utilization of resource would be realized.
Description
One, technical field
The present invention relates to a kind ofly extract salt of wormwood, aluminium hydroxide and prepare the prescription and the technology of siliceous fertilizer, belong to the manufacturing field of fertilizer with k-rich slate.
Two, background technology
The main component of k-rich slate is potassium felspar sand and biotite, is a kind of insoluble potassium, aluminium mineral, and wherein potassium oxide content is 10.5%～13.5%, and alumina content is 13%～19%, can be used as the essential mineral raw material of products such as producing sylvite, aluminum oxide.Countries in the world produce the sylvite product at present, are raw material with the soluble potassium ore deposit all generally, and China is all very short country of a soluble potassium resource, bauxitic clay resource, and insoluble potassium ore resources is very abundant.
From the seventies, begin to explore the work of from potassium bearing rock (containing the syenitoid rock), extracting salt of wormwood and potassium compound.Main research contents is, utilize methods such as lime sinter process or soda-lime sintering process, low temperature liquid polymerization process to extract sylvite and aluminium salt, but the extraction yield of potassium and aluminium is not high, and can not produce siliceous fertilizer simultaneously, can not utilize the element silicon in the ore, so economic benefit is bad, also do not used till now.
Three, summary of the invention
The object of the present invention is to provide a kind of sylvite, aluminium salt can produced can produce siliceous fertilizer simultaneously again, and the extraction yield height of potassium, aluminium salt, technology is simple, is a kind ofly to extract salt of wormwood, aluminium hydroxide and prepare the prescription and the technology of siliceous fertilizer with k-rich slate.
The object of the present invention is achieved like this:
Extract salt of wormwood and prepare the prescription of siliceous fertilizer with k-rich slate, include k-rich slate ore, Wingdale, it is characterized in that: its prescription is by weight percentage:
K-rich slate ore (SiO
2Content: 35%-55%): 30-45%
Wingdale (CaO content: 45%-56%): 55-70%
Calcium silicon mol ratio: [Ca/Si]=2.0-2.3;
Extract salt of wormwood, aluminium hydroxide and prepare the technology of siliceous fertilizer with k-rich slate, it is characterized in that:
(1) with k-rich slate breeze and Wingdale, mix in ball mill by above prescription, the material for preparing is called raw material;
(2) raw material are made the pellet of diameter 4-20mm on the balling disk(-sc) machine, add the calcined by rotary kiln stove through belt and screw feeder from the kiln tail then, raw material heat up at the calcined by rotary kiln stove, and the elapsed time was greater than 15 minutes, temperature 1180-1320 ℃ high-temperature calcination, raw material have burnt till grog, and grog is crushed to granularity 80-150 order in ball mill standby;
(3) potassium in the grog and aluminium element need strippings in special liquid, and this liquid is called adjustment liquid, and adjusting liquid is by mother liquor that contains salt of wormwood in the back segment operation and water preparation, adjusts K in the liquid composition
2O is controlled to be 20-38g/l;
(4) grog and adjustment liquid are added in the stripping groove, liquid-solid ratio 2.0～2.5 is warmed to more than 60 ℃, stirs more than 20 minutes, and filtering to get filtrate is used to carry potassium and aluminium element, and the composition of filter residue is mainly Calucium Silicate powder, and its washing, oven dry, abrasive dust are got siliceous fertilizer;
(5) filtrate is joined in the decomposer, feed concentration greater than 20% CO
2Gas, temperature of reaction 75-95 ℃, filtering to get filtrate is potash black-ash solution, and a part is used to adjust the preparation of liquid, and another part gets salt of wormwood through concentrated, crystallization.Filter to such an extent that filter residue is thick aluminium hydroxide, through bayer process purify aluminium hydroxide.
The present invention has the following advantages:
(1) k-rich slate (potassium felspar sand class mineral) all can be utilized, produce salt of wormwood, aluminium hydroxide and siliceous fertilizer;
(2) can be more than the extraction rate reached to 60% with aluminum oxide in the ore, more than the extraction rate reached to 80% of potassium oxide;
(3) element silicon in the ore can be changed into siliceous fertilizer, have higher economic value added, meet the policy of national environmental protection and comprehensive utilization of resources, good economic benefits and social benefit are arranged;
(4) the present invention does not have waste water, and waste residue produces, and has reached the purpose of comprehensive utilization of resources.
Four, description of drawings
Accompanying drawing is a process flow sheet of the present invention
Five, embodiment
Embodiment 1:
(1) gets k-rich slate ore (SiO
2Content: 55%): 33 tons; Wingdale (CaO content: 54%): 67 tons, k-rich slate breeze and Wingdale are carried out mixing of materials in ball mill.
(2) be sent in the balling disk(-sc) machine by e Foerderanlage, in the balling disk(-sc) machine, make the pellet of diameter 10-12mm, add the calcined by rotary kiln stove through belt and screw feeder from the kiln tail then, raw material heat up in the calcined by rotary kiln stove, and through 1260-1300 ℃ high-temperature calcination after 30 minutes, be delivered in the ball mill by e Foerderanlage, it is standby to be crushed to granularity 100-120 order by ball mill.
(3) adjust liquid with the preparation of the potash black-ash solution in the back segment operation, adjust K in the liquid composition
2O is 29-31g/l, and the chamotte powder for preparing is joined in the stripping groove with adjusting liquid, and adjustment liquid is 2.3 with the ratio of chamotte powder, the stripping temperature: 85 ℃, and dissolution time: 40 minutes, mass transport is filtered to get filtrate and filter residue in filter;
(4) filter residue enters into and stirs washing trough, with 50 ℃ of water washings, be sent to again in the baker, under 120 ℃ temperature, dry 30 minutes, add the pulverizer abrasive dust and get siliceous fertilizer to 100 orders;
(5) filtrate joins in the decomposer, feeds CO
2Concentration is greater than 38% limestone kiln gas, 85 ℃ of temperature of reaction, and filtering to get filtrate is potash black-ash solution, and a part is used to adjust the preparation of liquid, and another part gets salt of wormwood through evaporation concentration, crystallization.Filter to such an extent that filter residue is thick aluminium hydroxide, through bayer process purify aluminium hydroxide.
Embodiment 2:
(1) gets k-rich slate ore (SiO
2Content: 45%): 34.1 tons; Wingdale (CaO content: 50%): 65.9 tons, k-rich slate breeze and Wingdale are carried out mixing of materials in ball mill.
(2) be sent in the balling disk(-sc) machine by e Foerderanlage, in the balling disk(-sc) machine, make the pellet of diameter 8-10mm, add the calcined by rotary kiln stove through belt and screw feeder from the kiln tail then, raw material heat up in the calcined by rotary kiln stove, and through 1260-1300 ℃ high-temperature calcination after 40 minutes, be delivered in the ball mill by e Foerderanlage, it is standby to be crushed to granularity 100-120 order by ball mill.
(3) K in the liquid composition is adjusted in preparation
2O is 25-28g/l, and the chamotte powder for preparing is joined in the stripping groove with adjusting liquid, and adjustment liquid is 2.3 with the ratio of chamotte powder, the stripping temperature: 80 ℃, and dissolution time: 30 minutes, mass transport is filtered to get filtrate and filter residue in filter;
(4) filter residue enters into and stirs washing trough, with 60 ℃ of water washings, be sent to again in the baker, under 120 ℃ temperature, dry 30 minutes, add the pulverizer abrasive dust and get siliceous fertilizer to 100 orders;
(5) filtrate joins in the decomposer, and feeding concentration is 25% CO
2Gas, 75 ℃ of temperature of reaction, filtering to get filtrate is potash black-ash solution, and a part is used to adjust the preparation of liquid, and another part gets salt of wormwood through evaporation concentration, crystallization.Filter to such an extent that filter residue is thick aluminium hydroxide, through bayer process purify aluminium hydroxide.
Embodiment 3:
(1) gets k-rich slate ore (SiO
2Content: 36%): 42.2 tons; Wingdale (CaO content: 54%): 57.8 tons, k-rich slate breeze and Wingdale are carried out mixing of materials in ball mill.
(2) be sent in the balling disk(-sc) machine by e Foerderanlage, in the balling disk(-sc) machine, make the pellet of diameter 12-16mm, add the calcined by rotary kiln stove through belt and screw feeder from the kiln tail then, raw material heat up in the calcined by rotary kiln stove, and through 1230-1280 ℃ high-temperature calcination after 20 minutes, be delivered in the ball mill by e Foerderanlage, it is standby to be crushed to granularity 100-120 order by ball mill.
(3) K in the liquid composition is adjusted in preparation
2O is 34-36g/l, and the chamotte powder for preparing is joined in the stripping groove with adjusting liquid, and adjustment liquid is 2 with the ratio of chamotte powder, the stripping temperature: 88 ℃, and dissolution time: 30 minutes, mass transport is filtered to get filtrate and filter residue in filter;
(4) filter residue enters into and stirs washing trough, with 50 ℃ of water washings, be sent to again in the baker, under 120 ℃ temperature, dry 30 minutes, add the pulverizer abrasive dust and get siliceous fertilizer to 100 orders;
(5) filtrate joins in the decomposer, and feeding concentration is 35% CO
2Gas, 85 ℃ of temperature of reaction, filtering to get filtrate is potash black-ash solution, and a part is used to adjust the preparation of liquid, and another part gets salt of wormwood through evaporation concentration, crystallization.Filter to such an extent that filter residue is thick aluminium hydroxide, through bayer process purify aluminium hydroxide.
Claims (2)
1, extract salt of wormwood, aluminium hydroxide with k-rich slate and prepare the prescription of siliceous fertilizer, include k-rich slate ore, Wingdale, it is characterized in that: its prescription is by weight percentage:
K-rich slate ore (SiO
2Content: 35%-55%): 30-45%
Wingdale (CaO content: 45%-56%): 55-70%
Calcium silicon mol ratio: [Ca/Si]=2.0-2.3.
2, extract salt of wormwood, aluminium hydroxide with k-rich slate and prepare the technology of siliceous fertilizer, it is characterized in that:
(1) with k-rich slate breeze and Wingdale, mix in mixer by above prescription, the material for preparing is called raw material;
(2) raw material are made the pellet of diameter 4-20mm on the balling disk(-sc) machine, add the calcined by rotary kiln stove through belt and screw feeder from the kiln tail then, raw material heat up at the calcined by rotary kiln stove, and the elapsed time was greater than 15 minutes, temperature 1180-1320 ℃ high-temperature calcination, raw material have burnt till grog, and it is standby that grog is crushed to granularity 80-150 order with ball mill;
(3) potassium in the grog and aluminium element need strippings in special liquid, and this liquid is called adjustment liquid, adjust liquid and be by the back segment operation to contain the mother liquor of salt of wormwood and water preparation, adjust K in the liquid composition
2O should be 20-38g/l;
(4) grog and adjustment liquid are added in the stripping groove, liquid-solid ratio 2.0～2.5 is warmed to more than 60 ℃, stirs more than 20 minutes, and filtering to get filtrate is used to carry potassium and aluminium element, and the composition of filter residue is mainly Calucium Silicate powder, and its washing, oven dry, abrasive dust are got siliceous fertilizer;
(5) filtrate is joined in the decomposer, feed concentration greater than 20% CO
2Gas, temperature of reaction 75-95 ℃, filtering to get filtrate is potash black-ash solution, and a part is used to adjust the preparation of liquid, and another part gets salt of wormwood through concentrated, crystallization.Filter to such an extent that filter residue is thick aluminium hydroxide, through bayer process purify aluminium hydroxide.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143378 CN1603234A (en) | 2003-09-29 | 2003-09-29 | Formula and technique for extracting potassium carbonate and aluminum hydroxide and preparing siliceous fertilizer using slate with rich kalium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143378 CN1603234A (en) | 2003-09-29 | 2003-09-29 | Formula and technique for extracting potassium carbonate and aluminum hydroxide and preparing siliceous fertilizer using slate with rich kalium |
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| CN1603234A true CN1603234A (en) | 2005-04-06 |
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| CN 03143378 Pending CN1603234A (en) | 2003-09-29 | 2003-09-29 | Formula and technique for extracting potassium carbonate and aluminum hydroxide and preparing siliceous fertilizer using slate with rich kalium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190318A (en) * | 2011-04-29 | 2011-09-21 | 许树清 | Method for preparing potassium carbonate from mica ore obtained by carrying out floatation on potassium feldspar |
| CN104805311A (en) * | 2015-03-24 | 2015-07-29 | 中国地质科学院矿产综合利用研究所 | Method for extracting rubidium from rubidium-containing feldspar and co-producing silicon fertilizer |
| CN105050956A (en) * | 2013-03-14 | 2015-11-11 | 艺康美国股份有限公司 | Crystallization aids for bayer aluminum hydroxide |
| CN105819470A (en) * | 2016-03-16 | 2016-08-03 | 湖南隆洲驰宇科技有限公司 | Method utilizing composite salts to process insoluble potassium enriched aluminum ores so as to prepare potassium sulfate |
-
2003
- 2003-09-29 CN CN 03143378 patent/CN1603234A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190318A (en) * | 2011-04-29 | 2011-09-21 | 许树清 | Method for preparing potassium carbonate from mica ore obtained by carrying out floatation on potassium feldspar |
| CN105050956A (en) * | 2013-03-14 | 2015-11-11 | 艺康美国股份有限公司 | Crystallization aids for bayer aluminum hydroxide |
| CN104805311A (en) * | 2015-03-24 | 2015-07-29 | 中国地质科学院矿产综合利用研究所 | Method for extracting rubidium from rubidium-containing feldspar and co-producing silicon fertilizer |
| CN104805311B (en) * | 2015-03-24 | 2017-01-04 | 中国地质科学院矿产综合利用研究所 | Method for extracting rubidium from rubidium-containing feldspar and co-producing silicon fertilizer |
| CN105819470A (en) * | 2016-03-16 | 2016-08-03 | 湖南隆洲驰宇科技有限公司 | Method utilizing composite salts to process insoluble potassium enriched aluminum ores so as to prepare potassium sulfate |
| CN105819470B (en) * | 2016-03-16 | 2017-10-27 | 湖南隆洲驰宇科技有限公司 | The method for preparing potassium sulfate with the insoluble rich potassium aluminium mineral of compound salt treatment |
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