CN100402427C - Method for producing potassium chloride crystal through solarization on large area of brine pan - Google Patents
Method for producing potassium chloride crystal through solarization on large area of brine pan Download PDFInfo
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- CN100402427C CN100402427C CNB2005100731934A CN200510073193A CN100402427C CN 100402427 C CN100402427 C CN 100402427C CN B2005100731934 A CNB2005100731934 A CN B2005100731934A CN 200510073193 A CN200510073193 A CN 200510073193A CN 100402427 C CN100402427 C CN 100402427C
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- mother liquor
- carnallitite
- halogen
- potassium chloride
- repone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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Abstract
The present invention relates to a method for crystallizing potassium chloride by the large-area solarization of a salt field. The present invention is characterized in that the method for crystallizing potassium chloride by the large-area solarization of a salt field takes chloride type potassium-containing brine as raw materials, and products in which more than 93% of potassium chloride is contained can be prepared by the processes that the original brine is solarized after being spread; the brine is blended; carnallite is decomposed in a silt remover; coarse potassium is washed in the silt remover and solarized after being spread; potassium chloride is dewatered, washed and dried, etc. A salt field is solarized in large area, the links of raw material transportation and workshop production are omitted, and the time for the yield of products is shortened by one year; the cost is low, the yield is large, and potassium chloride in different kinds of mother solution is all recovered. Thus, the recovery rate is highest as compared with that of like production technologies. The present invention adopts pure natural resources and energy resources and does not use substances which possibly increase environmental pollution; thus, the present invention is an environmental protection method.
Description
Technical field
The present invention relates to the alkali metal halide technical field, a kind of specifically salt pan big area is shone the method for system Repone K.
Background technology
Repone K is the principal item of agriculture potash fertilizer, also is the industrial main raw material of producing other sylvite.The Repone K manufacturing enterprise of China 90% continues to use production methods such as traditional positive and negative " flotation " and thermosol at present, all be with raw material " carnallitite " from the salt pan through being shipped to the workshop stock yard, advance bucket by the dozer pusher again, dispatch from the factory through links such as charging machine, rotary conveyor, disassembler, flotation machine, whizzer, drying and packagings.Above method investment is big, cost is high, and machine is numerous, and process is tediously long, and the rate of recovery is low, all need add chemical agent and coal-fired consumption, and link control is bad arbitrarily, and low-grade Repone K product all will emerge in an endless stream.
Summary of the invention
The present invention is the deficiency that overcomes in the prior art, and proposing a kind of is the method that raw material, rate of recovery salt pan big area high and free from environmental pollution is shone system Repone K with the potassium chloride-type brine.
Method of the present invention may further comprise the steps:
Fs:
(1) former halogen shines in advance
The potassium chloride-type brine pump is tedded to salt pan 1, shine to the bittern surface and do not float salt efflorescence, content of magnesium chloride between 25% to 27%, obtain mother liquor 1.
(2) shine the system carnallitite
Pump continued to ted to salt pan 2 after mother liquor 1 in the step (1) removed solid impurity, and the solution evaporation condensing crystal is separated out " carnallitite ", shone when strength of solution to obtain mother liquor 2 when the U.S. concentration of mother-in-law is 34Be～35Be.
(3) high mother liquid of magnesium stores
After at 12 in the evening same day until before 10 of the next mornings in the separating step (2) mother liquor 2 deep water to the salt pan 3 store for future use, carnallitite stays at the bottom of the salt pan in (2).
Subordinate phase
(4) former halogen shines the insulation storage in advance
Potassium chloride-type brine pump shallow water to the salt pan 1 is tedded, shine to the bittern surface do not float salt efflorescence, content of magnesium chloride 25%/to 27% between, until before at 5 in afternoon, remove solid impurity, mother liquor 3 pumps that obtain are done deep water and are stored for future use in salt pan 2 behind 12 of that mornings.
(5) convert system carnallitite (hereinafter to be referred as converting halogen)
After selecting every night 12 until the next morning 12 select front pump get (4) in the mother liquor 3 and the pump that store get mother liquor 2 of storing in (3) by 1: 1～3 ratio other setting convert in the halogen pipe or directly overflow to after mixing is mixed in other containers convert in the halogen settling tank through precipitation clarify carnallitite and mother liquor 4;
(6) tedding again of mother liquor stores
With mother liquor 4 pumps after the clarification in (5) to the salt pan 4 continue to ted to the U.S. concentration of mother-in-law be 34Be～35Be, pump to salt pan 3 deep water in the step (3) stored for future use after at 12 in the evening same day until before 9 of the next mornings;
(7) repeat to convert halogen
The process recirculation of (4), (5), (6) set by step will be till will converting the halogen settling tank and almost filling carnallitite;
(8) configuration of washing soln
Getting the solution in the salt pan 2 and fresh water in the step (4), to be mixed with Baume concentration be that the washing soln of 8Be～20Be stores for future use;
(9) carnallitite is washed thick potassium
With the carnallitite in the silt remover extraction step (7), and the washing soln in the step (8) impacted carnallitite through the high-pressure pump pump near the silt remover suction inlet, silt remover is taken away carnallitite and washing soln in the lump, carnallitite through washing soln in the cleaning function of silt remover impeller and pipeline, drain into decompose jar 1 overflow to again after continuing to decompose thick potassium precipitation clarify rough Repone K and mother liquor 5; Mother liquor 5 returns the former halogen of (4) neutralization and teds together, and the size of evenly adjusting washing soln is controlled at more than 60% the content of rough Repone K;
(10) washing of smart potassium and tedding
With the rough Repone K in the silt remover extraction (9), and fresh water is evacuated under the silt remover through high-pressure pump impacts rough Repone K (evenly adjust KCE content that the size control of fresh water washs out more than 85%) near the suction inlet, silt remover is taken away rough Repone K and fresh water in the lump, rough Repone K drains in the cleaning function of silt remover impeller and pipeline through fresh water and decomposes jars 2 and overflow to smart potassium after continuing to decompose again and ted Tanaka's precipitation, ted and make refined potassium chloride, gets crystalline potassium chloride and mother liquor 6 when saturated altogether when shining to Repone K, sodium-chlor; Mother liquor 6 returns the former halogen of step (4) neutralization and teds together.
(11) dehydration of crystal Repone K
To remove mother liquor can to get content be 93%～95% crystalline potassium chloride and mother liquor 7 through tedding the crystalline potassium chloride that obtains in (10), mother liquor 7 returns the original solution of (10) neutralization and teds together again.
(12) washing is dry
According to market demand can be that 93%～95% crystalline potassium chloride adds a little fresh water drip washing again with the content that obtains in the step (11), dehydrating and can getting content is 98% Repone K and mother liquor 8, and mother liquor 8 returns the original solution of step (10) neutralization and teds together again.
The step of described subordinate phase (5) is that whole day was converted stew in soy sauce in 24 hours and got carnallitite.
Washing soln in the step of described subordinate phase (8) replaces with fresh water.
The step of described subordinate phase (9) (10) (11) (12) is aided with container and dehydration equipment directly makes Repone K.
The carnallitite that described step by subordinate phase (5), (7) obtain is directly extremely saturated with fresh water dissolution, makes Repone K through tedding again.
Describedly convert the halogen settling tank and smart potassium teds the field, make with the polyvinyl chloride plastic-coated fabric, concrete grammar is: the polyvinyl chloride plastic-coated fabric that will make by the Ikeda design area, simultaneously be folded into the designed dykes and dams height dimension in pond and add 0.2 meter in addition all around to the center, pond, the Ikeda design height heap of pressing is all around outside built dykes and dams then, at last with unnecessary 0.2 meter dig be placed on dykes and dams above, compress with weight, prevent wind.
Describedly convert being constructed as follows of halogen pipe: with a diameter more than 1 meter, it is real that one end of the big iron pipe of length more than 4 meters welds envelope, fix the plastic rigid pipe of 100 millimeters of two diameters side by side to bottom at the other end of big iron pipe again near big iron pipe, dig a diameter more than 1 meter converting halogen precipitation pool side during installation, the shallow hole that the degree of depth is 2～3 meters, the big iron pipe mouth of pipe vertically is embedded in the hole up and fixing, big iron pipe height suitable for reading should be higher than converts halogen settling tank dykes and dams more than 20 centimetres.
Employed bittern-mixing pool field and smart potassium ted the Ikeda among the present invention, make with PVC (polyvinyl chloride) plastic-coated fabric.Its method is: behind the design area of PVC (polyvinyl chloride) plastic-coated fabric thermal synthesis Ikeda, to be folded into the designed dykes and dams height dimension in pond and add 0.2 meter in addition to the center, pond simultaneously around it, the Ikeda height heap of pressing is all around outside built dykes and dams then, at last with unnecessary 0.2 meter dig be placed on dykes and dams above, compress with weight, prevent wind.
Employedly among the present invention convert the halogen plumber and make principle and being constructed as follows: with a diameter more than 1 meter, it is real that one end of the big iron pipe of length more than 4 meters welds envelope, fixes the plastic rigid pipe of 100 millimeters of two diameters side by side to the bottom near big iron pipe at the other end of big iron pipe again.Dig a diameter more than 1 meter converting halogen precipitation pool side during installation, the shallow hole that the degree of depth is 2～3 meters, vertically be embedded in the hole the big iron pipe mouth of pipe also fixing up, big iron pipe height suitable for reading should be higher than converts halogen settling tank dykes and dams more than 20 centimetres. when temperature is minimum at dead of night during work respectively pump get the solution that stores in the step (4) and pump and get in the step (3) high U.S. mother liquor b in converting the halogen pipe in two plastic rigid pipes side by side, solution, directly overflows to after the solution mixing is mixed and converts the halogen settling tank to oral area from big iron pipe bottom spill-over always.
Employed silt remover is formed and principle of work is among the present invention: silt remover is by slush pump and defeated ore deposit system, high-pressure pump is towards the ore deposit system, power distribution system three parts are formed, its principle of work simulating nature circle current scour principle, that borrows waterpower is used for digging the ore deposit, defeated ore deposit. and be that washing soln produces pressure through high-pressure pump, spray one closely knit high speed water column by hydraulic giant, ore body is pulverized in cutting, makes it the humidifying disintegration, form the ore pulp mixed solution, inhaled by slush pump and defeated pipe thereof and deliver in other settling tank or the decomposition jar, defeated in 200 meters, lift is below 10 meters, during as long distance of need or high-lift conveying, can add several pump relays. defeated ore deposit system comprises slush pump, buoyancy aid, defeated ore deposit hard tube, rubber hose, (flexible pipe can be used for outlet or pipeline turning) high pressure comprises high-pressure hydraulic pump towards the ore deposit system, hydraulic pipe, towards the mineral water rifle. power distribution system comprises switch box, water-proof cable, in converting halogen settling tank or thick potassium settling tank former deposit mother liquor and drain substantially after, promptly available silt remover suction ore pulp is to second step.
Advantage of the present invention and effect:
(1) to adopt former bittern be that raw material passes through the salt pan big area and shines system in the present invention, saved raw material transportation and Workshop Production link, so cost is extremely low, output is big, grade is even, and various mother liquor reclaims fully, so rate of recovery height of the present invention.
(2) the present invention adopts the pure natural resource and the energy, do not increase the material that pollutes, thereby the present invention is the environmental protection method.
(3) the present invention compares floatation process, and to the Repone K product, the time is carried the previous year from former halogen.Except that taking out halogen,, saved the construction and the investment in workshop in the investment, produced one ton of content and be about 200 yuan of 95% Repone K cost hardly with its mechanical means altogether with the pump.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Adopt the mode of specific embodiment further to explain the present invention below, but the present invention is not limited to these embodiment.
Embodiment (mother liquor does not reclaim)
In the time of 25 ℃, press preceding method, taking by weighing the U.S. concentration of 1116kg mother-in-law is the potassium chloride-type brine of 29Be, shining content of magnesium chloride in advance is 26%, obtain the solution of 836kg, the high mother liquid of magnesium that equals 35Be with the U.S. concentration of mother-in-law is mixed in 1 to 2 ratio mixed flow again, precipitation is clarified to such an extent that KCE content is 23% carnallitite 58kg, again with the U.S. concentration of mother-in-law be the washing soln of 10Be to obtain KCE content after in 3 to 1 ratio thorough washing carnallitite be 56% thick Repone K 14kg, wash, ted that to obtain content be 93% crystalline potassium chloride 5.9kg again with 34Kg fresh water.
Claims (6)
1. the method for a producing potassium chloride crystal through solarization on large area of brine pan is characterized in that it may further comprise the steps: the fs:
(1) former halogen shines in advance
The potassium chloride-type brine pump is tedded to salt pan 1, shine to the bittern surface and do not float salt efflorescence, content of magnesium chloride between 25% to 27%, obtain mother liquor 1;
(2) shine the system carnallitite
Pump continued to ted to salt pan 2 after mother liquor 1 in the step (1) removed solid impurity, and the solution evaporation condensing crystal is separated out carnallitite, shone when strength of solution to obtain mother liquor 2 when Baume concentration is 34Be～35Be;
(3) high mother liquid of magnesium stores
After at 12 in the evening same day until before 10 of the next mornings in the separating step (2) mother liquor 2 deep water to the salt pan 3 store for future use, carnallitite stays at the bottom of the salt pan in step (2);
Subordinate phase
(4) former halogen shines the insulation storage in advance
Potassium chloride-type brine pump shallow water to the salt pan 1 is tedded, shine to the bittern surface and do not float salt efflorescence, content of magnesium chloride between 25% to 27%, until before at 5 in afternoon, remove solid impurity, mother liquor 3 pumps that obtain are done deep water and are stored for future use in salt pan 2 behind 12 of that mornings;
(5) convert the system carnallitite hereinafter to be referred as converting halogen
After selecting every night 12 until the next morning 12 select front pump get in step (4) mother liquor 3 that stores and pump get the mother liquor 2 that stores in the step (3) by 1: 1～3 ratio the converting in the halogen pipe or directly overflow to after mixing is mixed in the container and convert in the halogen settling tank of other setting, through precipitation clarify carnallitite and mother liquor 4;
(6) tedding again of mother liquor stores
With mother liquor 4 pumps after the clarification in the step (5) to the salt pan 4 continue to ted to Baume concentration be 34Be～35Be, pump to salt pan 3 deep water in the step (3) stored for future use after at 12 in the evening same day until before 9 of the next mornings;
(7) repeat to convert halogen
The process recirculation of (4), (5), (6) set by step will be till will converting the halogen settling tank and filling carnallitite;
(8) configuration of washing soln
Getting the solution in the salt pan 2 and fresh water in the step (4), to be mixed with Baume concentration be that the washing soln of 8Be～20Be stores for future use; Perhaps use fresh water as washing soln;
(9) carnallitite is washed thick potassium
With the carnallitite in the silt remover extraction step (7), and the washing soln in the step (8) impacted carnallitite through the high-pressure pump pump near the silt remover suction inlet, silt remover is taken away carnallitite and washing soln in the lump, carnallitite through washing soln in the cleaning function of silt remover impeller and pipeline, drain into decompose jar 1 overflow to again after continuing to decompose thick potassium precipitation clarify rough Repone K and mother liquor 5, mother liquor 5 returns the size that the former halogen of step (4) neutralization teds even adjustment washing soln together, and the content of rough Repone K is controlled at more than 60%;
(10) washing of smart potassium and tedding
With the rough Repone K in the silt remover extraction step (9), and fresh water is evacuated under the silt remover through high-pressure pump impacts rough Repone K near the suction inlet, the KCE content that the even size control of adjusting fresh water is washed out is more than 85%, silt remover is taken away rough Repone K and fresh water in the lump, rough Repone K drains in the cleaning function of silt remover impeller and pipeline through fresh water and decomposes jars 2 and overflow to smart potassium after continuing to decompose again and ted Tanaka's precipitation, ted and make refined potassium chloride, gets crystalline potassium chloride and mother liquor 6 when saturated altogether when shining to Repone K, sodium-chlor; Mother liquor 6 returns the former halogen of step (4) neutralization and teds together;
(11) dehydration of crystal Repone K
To remove mother liquor to get content be 93%～95% crystalline potassium chloride and mother liquor 7 through tedding the crystalline potassium chloride that obtains in the step (10), mother liquor 7 returns in the step (10) and teds together again;
(12) washing is dry
With the content that obtains in the step (11) is that 93%～95% crystalline potassium chloride adds a little fresh water drip washing again, dehydrates to such an extent that content is 98% Repone K and mother liquor 8, and mother liquor 8 returns in the step (10) and teds together again.
2. method according to claim 1, the step (5) that it is characterized in that described subordinate phase are that whole day was converted stew in soy sauce in 24 hours and got carnallitite.
3. method according to claim 1, it is characterized in that describedly converting the halogen settling tank and smart potassium teds the field, make with the polyvinyl chloride plastic-coated fabric, concrete grammar is: the polyvinyl chloride plastic-coated fabric that will make by the Ikeda design area, simultaneously be folded into the designed dykes and dams height dimension in pond and add 0.2 meter in addition all around to the center, pond, then outside around build dykes and dams by Ikeda design height heap, at last with unnecessary 0.2 meter dig be placed on dykes and dams above, compress with weight, prevent wind.
4. method according to claim 1, it is characterized in that described being constructed as follows of halogen pipe of converting: with a diameter more than 1 meter, it is real that one end of the big iron pipe of length more than 4 meters welds envelope, fix the plastic rigid pipe of 100 millimeters of two diameters side by side to bottom at the other end of big iron pipe again near big iron pipe, dig a diameter more than 1 meter converting halogen precipitation pool side during installation, the shallow hole that the degree of depth is 2～3 meters, the big iron pipe mouth of pipe vertically is embedded in the hole up and fixing, big iron pipe height suitable for reading should be higher than converts halogen settling tank dykes and dams more than 20 centimetres.
5. the method for the described a kind of producing potassium chloride crystal through solarization on large area of brine pan of claim 1 is characterized in that the step (9) (10) (11) of described subordinate phase and (12) are aided with container and dehydration equipment directly makes Repone K.
6. the method for a producing potassium chloride crystal through solarization on large area of brine pan is characterized in that it may further comprise the steps: the fs:
(1) former halogen shines in advance
The potassium chloride-type brine pump is tedded to salt pan 1, shine to the bittern surface and do not float salt efflorescence, content of magnesium chloride between 25% to 27%, obtain mother liquor 1;
(2) shine the system carnallitite
Pump continued to ted to salt pan 2 after mother liquor 1 in the step (1) removed solid impurity, and the solution evaporation condensing crystal is separated out carnallitite, shone when strength of solution to obtain mother liquor 2 when Baume concentration is 34Be～35Be;
(3) high mother liquid of magnesium stores
After at 12 in the evening same day until before 10 of the next mornings in the separating step (2) mother liquor 2 deep water to the salt pan 3 store for future use, carnallitite stays at the bottom of the salt pan in step (2);
Subordinate phase
(4) former halogen shines the insulation storage in advance
Potassium chloride-type brine pump shallow water to the salt pan 1 is tedded, shine to the bittern surface and do not float salt efflorescence, content of magnesium chloride between 25% to 27%, until before at 5 in afternoon, remove solid impurity, mother liquor 3 pumps that obtain are done deep water and are stored for future use in salt pan 2 behind 12 of that mornings;
(5) convert the system carnallitite hereinafter to be referred as converting halogen
After selecting every night 12 until the next morning 12 select front pump get in step (4) mother liquor 3 that stores and pump get the mother liquor 2 that stores in the step (3) by 1: 1～3 ratio the converting in the halogen pipe or directly overflow to after mixing is mixed in the container and convert in the halogen settling tank of other setting, through precipitation clarify carnallitite and mother liquor 4;
(6) tedding again of mother liquor stores
With mother liquor 4 pumps to the salt pan 4 after the clarification in the step (5) continue to ted to Baume concentration be 34Be～35Be after at 12 in the evening same day until before 9 of the next mornings pump to salt pan 3 deep water in the step (3) store for future use;
(7) repeat to convert halogen
The process recirculation of (4), (5), (6) set by step will be till will converting the halogen settling tank and filling carnallitite;
(8) produce Repone K
The carnallitite that step (5) and (7) are obtained directly with fresh water dissolution to saturated, make Repone K through tedding again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100731934A CN100402427C (en) | 2005-06-01 | 2005-06-01 | Method for producing potassium chloride crystal through solarization on large area of brine pan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100731934A CN100402427C (en) | 2005-06-01 | 2005-06-01 | Method for producing potassium chloride crystal through solarization on large area of brine pan |
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| Publication Number | Publication Date |
|---|---|
| CN1872687A CN1872687A (en) | 2006-12-06 |
| CN100402427C true CN100402427C (en) | 2008-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100731934A Expired - Fee Related CN100402427C (en) | 2005-06-01 | 2005-06-01 | Method for producing potassium chloride crystal through solarization on large area of brine pan |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923735A (en) * | 2012-09-28 | 2013-02-13 | 新疆昆金矿业有限责任公司 | Method for preparing potassium chloride through highland salt lake raw brine salt pan process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048685A (en) * | 1989-07-13 | 1991-01-23 | 大连皮子窝化工厂 | Salt, potassium chloride co-production process and equipment |
| CN1063663A (en) * | 1992-03-05 | 1992-08-19 | 化学工业部化工矿山设计研究院 | Potassium chloride preparing by chloride type patassium brine |
| CN1425608A (en) * | 2003-01-13 | 2003-06-25 | 高松耀 | Process for producing high grade crystal potassium chloride |
| CN1558870A (en) * | 2001-10-22 | 2004-12-29 | ��ѧ�빤ҵ�о��� | Recovery of sodium chloride and other salts from brine |
| CN1587048A (en) * | 2004-09-01 | 2005-03-02 | 高崧耀 | Process for preparing crystalline potassium chloride by raw bittern salt field method |
-
2005
- 2005-06-01 CN CNB2005100731934A patent/CN100402427C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048685A (en) * | 1989-07-13 | 1991-01-23 | 大连皮子窝化工厂 | Salt, potassium chloride co-production process and equipment |
| CN1063663A (en) * | 1992-03-05 | 1992-08-19 | 化学工业部化工矿山设计研究院 | Potassium chloride preparing by chloride type patassium brine |
| CN1558870A (en) * | 2001-10-22 | 2004-12-29 | ��ѧ�빤ҵ�о��� | Recovery of sodium chloride and other salts from brine |
| CN1425608A (en) * | 2003-01-13 | 2003-06-25 | 高松耀 | Process for producing high grade crystal potassium chloride |
| CN1587048A (en) * | 2004-09-01 | 2005-03-02 | 高崧耀 | Process for preparing crystalline potassium chloride by raw bittern salt field method |
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| CN1872687A (en) | 2006-12-06 |
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Granted publication date: 20080716 |