CN102205978A - Method for producing high-quality sylvine in low cost - Google Patents
Method for producing high-quality sylvine in low cost Download PDFInfo
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- CN102205978A CN102205978A CN2011100902810A CN201110090281A CN102205978A CN 102205978 A CN102205978 A CN 102205978A CN 2011100902810 A CN2011100902810 A CN 2011100902810A CN 201110090281 A CN201110090281 A CN 201110090281A CN 102205978 A CN102205978 A CN 102205978A
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- sylvite
- mgso
- carnallitite
- brine
- saturated
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Abstract
The invention discloses a method for producing high-quality sylvine in low cost. The method comprises the following steps: step 1, drying taken raw brine in a salt field nearby a working field to obtain brine in which the potassium salt is saturated; step 2, transporting the brine in which potassium salt starts to be saturated to the salt field nearby a processing plant; step 3, carrying out brine blending on the brine in which potassium salt starts to be saturated and the old brine in a mass ratio of 1: (0.5-2) nearby the processing plant to obtain brine in which carnallite is saturated; step 4, drying the brine in which carnallite is saturated so as to form the carnallite containing MgSO4; step 5, recovering the carnallite containing MgSO4 and washing; and step 6, after the solid washed in the step 5 is converted, collecting the solid so as to obtain potassium sulfate. According to the invention, a method in which the brine is dried and blended at different stages and transportation is carried out through a pipeline is adopted, thereby effectively solving the problem that a certain space exits between a processing plant and a working field so as to cause inconvenient processing, reducing production cost and improving the quality of a product especially potassium salt product.
Description
Technical field the present invention relates to salt mine development and use field, relates in particular to the method for low cost production high quality sylvite.
The many salt mines of background technology company build source mill in the middle of the mineral deposit in, and the suitable location of taking bittern and building the salt pan is distributed in four limits in mineral deposit, and therefore, all there are certain space length in exploiting field and source mill, are generally 10km and even 20km.At present, normally the salt Tanaka in the exploiting field shines former halogen to becoming carnallitite, with transportation means solid mineral is transported in the source mill then and processes.This long-distance transportation not only expends lot of manpower and material resources, also can produce very big influence to the quality of ore, causes the production efficiency of salt mine low, the production cost height.
Summary of the invention the purpose of this invention is to provide and a kind ofly effectively reduces production costs, and improves the sylvite method for quality.
For achieving the above object, the method of low cost production high quality sylvite of the present invention comprises the steps, step 1: near the salt pan of the former halogen exploiting field that will take shone to sylvite and begun saturated bittern, and the mass percentage concentration that described sylvite begins each component in the saturated bittern is as follows: KCl 3.81%-4.74%, NaCl 4.91%-15.92%, MgCl
20%-15.59%, MgSO
45.76%-11.44%; Step 2: sylvite is begun saturated bittern utilize channel or pipe-line transportation near the salt pan the source mill; Step 3: sylvite begins near the salt pan of saturated bittern source mill and old halogen by mass ratio 1: 1-5 converts halogen, and the mass percentage concentration of each component is as follows in the described old halogen: KCl 0.1%-0.3%, NaCl 0.25%-0.4%, MgCl
227.1%-30.5%, MgSO
44%-5% converts halogen to carnallitite and begins saturated bittern; Step 4: carnallitite is begun saturated bittern shine to make and contain MgSO
4Carnallitite; Step 5: extraction contains MgSO
4Carnallitite is by the MgSO that contains per ton
4Carnallitite adds 250-310kg fresh water or 500-600kg K
2SO
4Mother liquor washing after the production; Step 6: will be through the solid after step 5 washing by solid adding 960-1020kg fresh water per ton, system keeps 40-50 ℃ of temperature, and reaction 20-40min transforms back collection solid and gets vitriolate of tartar.
Sylvite described in the step 3 of the present invention begins MgCl in the saturated bittern
2With the mass concentration ratio of KCl be 6-7.
K described in the step 5 of the present invention or 6
2SO
4The mass percentage concentration of each component is as follows in the mother liquor after the production: KCl 14%, NaCl 1%-2%, MgCl
27%-8%, MgSO
44%-5%.
Adopt utilization of the present invention to shine halogen stage by stage and convert halogen and the method by pipeline transportation, effectively solved the contradiction that there are certain space length in source mill and exploiting field, reduced production cost, improved product, especially the quality of sylvite product.
Below the embodiment part technical term among the present invention is further explained:
Term among the present invention " former halogen " refers to from the bittern of the saltiness of descending the hole naturally or gather in the salt lake 〉=25%, owing to be not referred to as former halogen through any artificial processing event, there is certain difference in the former halogen composition in various places.
Of the present invention " near " be not uncertain word, but the relative distance between source mill and the exploiting field can be with source mill or the exploiting field is adjacent or very short at interval distance and build the salt pan.
" carnallitite begins saturated bittern " of the present invention refers to that carnallitite begins to separate out in this system, if environment (air pressure, temperature), and the bittern system fixes, this saturation point is to determine relatively.General, carnallitite begins MgCl in the saturated bittern
2With the mass concentration ratio of KCl, i.e. MgCl
2/ KCl is about near 6.7.
" K of the present invention
2SO
4Mother liquor after the production " refer to the liquid substance in the sylvite production process, in the salt production field, its definition is comparatively clear and definite, general, and the mass percentage concentration of each component is as follows in this mother liquor: KCl 14%, NaCl 1%-2%, MgCl
27%-8%, MgSO
44%-5%.
The method of low cost production high quality sylvite of the present invention comprises the steps, step 1: near the salt pan of the former halogen exploiting field that will take shone to sylvite and begun saturated bittern, and the mass percentage concentration that described sylvite begins each component in the saturated bittern is as follows: KCl 3.81%-4.74%, NaCl 4.91%-15.92%, MgCl
20%-15.59%, MgSO
45.76%-11.44%; Step 2: sylvite is begun saturated bittern utilize channel or pipe-line transportation near the salt pan the source mill; Step 3: sylvite begins near the salt pan of saturated bittern source mill and old halogen by mass ratio 1: 0.5-2 converts halogen, and the mass percentage concentration of each component is as follows in the described old halogen: KCl 0.1%-0.3%, NaCl 0.25%-0.4%, MgCl
227.1%-30.5%, MgSO
44%-5% converts halogen to carnallitite and begins saturated bittern; Step 4: carnallitite is begun saturated bittern shine to make and contain MgSO
4Carnallitite; Step 5: extraction contains MgSO
4Carnallitite is by the MgSO that contains per ton
4Carnallitite adds 250-310kg fresh water or 500-600kg K
2SO
4Mother liquor washing after the production; Step 6: will be through the solid after step 5 washing by solid adding 960-1020kg fresh water per ton, system keeps 40-50 ℃ of temperature, and reaction 20-40min transforms back collection solid and gets vitriolate of tartar.
Sylvite described in the step 3 of the present invention begins MgCl in the saturated bittern
2With the mass concentration ratio of KCl be 6-7.
K described in the step 5 of the present invention or 6
2SO
4The mass percentage concentration of each component is as follows in the mother liquor after the production: KCl 14%, NaCl 1%-2%, MgCl
27%-8%, MgSO
44%-5%.
Further specify below in conjunction with specific embodiment:
Embodiment 1: the method for low cost production high quality sylvite comprises the steps, step 1: near the salt pan of the former halogen exploiting field that will take shone to sylvite and begun saturated bittern, and the mass percentage concentration that described sylvite begins each component in the saturated bittern is as follows: KCl 3.81%, NaCl 15.92%, MgCl
20%, MgSO
411.44%; Step 2: sylvite is begun saturated bittern utilize channel or pipe-line transportation near the salt pan the source mill; Step 3: sylvite begins near the salt pan of saturated bittern source mill and converts halogen with old halogen at 1: 0.5 by mass ratio, and the mass percentage concentration of each component is as follows in the described old halogen: KCl 0.3%, NaCl 0.4%, MgCl
230.5%, MgSO
44%, convert halogen to carnallitite and begin saturated bittern, i.e. MgCl
2With the mass concentration ratio of KCl be 7; Step 4: carnallitite is begun saturated bittern shine to make and contain MgSO
4Carnallitite; Step 5: extraction contains MgSO
4Carnallitite is by the MgSO that contains per ton
4Carnallitite adds 250kg fresh water or 600kg K
2SO
4Mother liquor washing after the production; Step 6: will be through the solid after step 5 washing by solid adding 960kg fresh water per ton, system keeps 40 ℃ of temperature, and reaction 40min transforms back collection solid and gets vitriolate of tartar.
K described in the step 5 of the present invention or 6
2SO
4The mass percentage concentration of each component is as follows in the mother liquor after the production: KCl 14%, NaCl 1%, MgCl
28%, MgSO
44%.
Embodiment 2: the method for low cost production high quality sylvite comprises the steps, step 1: near the salt pan of the former halogen exploiting field that will take shone to sylvite and begun saturated bittern, and the mass percentage concentration that described sylvite begins each component in the saturated bittern is as follows: KCl 4.74%, NaCl 4.91%, MgCl
215.59%, MgSO
45.76%; Step 2: sylvite is begun saturated bittern utilize channel or pipe-line transportation near the salt pan the source mill; Step 3: sylvite begins near the salt pan of saturated bittern source mill and converts halogen with old halogen at 1: 1 by mass ratio, and the mass percentage concentration of each component is as follows in the described old halogen: KCl 0.1%, NaCl 0.25%, MgCl
227.1%, MgSO
45%, convert halogen to carnallitite and begin saturated bittern, i.e. MgCl
2With the mass concentration ratio of KCl be 6; Step 4: carnallitite is begun saturated bittern shine to make and contain MgSO
4Carnallitite; Step 5: extraction contains MgSO
4Carnallitite is by the MgSO that contains per ton
4Carnallitite adds 310kg fresh water or 500kg K
2SO
4Mother liquor washing after the production; Step 6: will be through the solid after step 5 washing by solid adding 1020kg fresh water per ton, system keeps 50 ℃ of temperature, and reaction 20min transforms back collection solid and gets vitriolate of tartar.
K described in the step 5 of the present invention or 6
2SO
4The mass percentage concentration of each component is as follows in the mother liquor after the production: KCl 14%, NaCl 2%, MgCl
27%, MgSO
45%.
Embodiment 3: the method for low cost production high quality sylvite comprises the steps, step l: near the salt pan of the former halogen exploiting field that will take shone to sylvite and begun saturated bittern, and the mass percentage concentration that described sylvite begins each component in the saturated bittern is as follows: KCl 4.20%, NaCl 10.92%, MgCl
210.59%, MgSO
48.44%; Step 2: sylvite is begun saturated bittern utilize channel or pipe-line transportation near the salt pan the source mill; Step 3: sylvite begins near the salt pan of saturated bittern source mill and converts halogen with old halogen at 1: 2 by mass ratio, and the mass percentage concentration of each component is as follows in the described old halogen: KCl 0.15%, NaCl 0.35%, MgCl
228.5%, MgSO
44.5%, convert halogen to carnallitite and begin saturated bittern, i.e. MgCl
2With the mass concentration ratio of KCl be 6.7; Step 4: carnallitite is begun saturated bittern shine to make and contain MgSO
4Carnallitite; Step 5: extraction contains MgSO
4Carnallitite is by the MgSO that contains per ton
4Carnallitite adds 280kg fresh water or 550kg K
2SO
4Mother liquor washing after the production; Step 6: will be through the solid after step 5 washing by solid adding 980kg fresh water per ton, system keeps 45 ℃ of temperature, and reaction 30min transforms back collection solid and gets vitriolate of tartar.
K described in the step 5 of the present invention or 6
2SO
4The mass percentage concentration of each component is as follows in the mother liquor after the production: KCl 14%, NaCl 1.2%, MgCl
27.8%, MgSO
44.5%.
Embodiment 4: the method for low cost production high quality sylvite comprises the steps, step 1: near the salt pan of the former halogen exploiting field that will take shone to sylvite and begun saturated bittern, and the mass percentage concentration that described sylvite begins each component in the saturated bittern is as follows: KCl 4.51%, NaCl 13.91%, MgCl
26%, MgSO
47.76%; Step 2: sylvite is begun saturated bittern utilize channel or pipe-line transportation near the salt pan the source mill; Step 3: sylvite begins near the salt pan of saturated bittern source mill and converts halogen with old halogen at 1: 1.5 by mass ratio, and the mass percentage concentration of each component is as follows in the described old halogen: KCl 0.25%, NaCl 0.3%, MgCl
229.1%, MgSO
44.2%, convert halogen to carnallitite and begin saturated bittern, i.e. MgCl
2With the mass concentration ratio of KCl be 6.3; Step 4: carnallitite is begun saturated bittern shine to make and contain MgSO
4Carnallitite; Step 5: extraction contains MgSO
4Carnallitite is by the MgSO that contains per ton
4Carnallitite adds 260kg fresh water or 590kg K
2SO
4Mother liquor washing after the production; Step 6: will be through the solid after step 5 washing by solid adding 1000kg fresh water per ton, system keeps 42 ℃ of temperature, and reaction 35min transforms back collection solid and gets vitriolate of tartar.
K described in the step 5 of the present invention or 6
2SO
4The mass percentage concentration of each component is as follows in the mother liquor after the production: KCl 14%, NaCl 1.8%, MgCl
27.5%, MgSO
44.3%.
The suitable especially sulfate type salt lake that is applied to of recovery method of the present invention, for example Qazz is according to ore field, horse sea ore field, billow beach ore field, Lop Nur ore field or the like.
Need to prove; bittern is a kind of mixed system of complexity; qualification to the mass percentage concentration of each salt ion in the bittern among the present invention is a value range; it may change to some extent with the difference in temperature, air pressure or exploitation place; as long as repeatedly shine halogen and convert halogen but contain, and the step that bittern is carried by pipe long-distance promptly falls into protection scope of the present invention.
Claims (3)
1. the method for low cost production high quality sylvite is characterized in that: it comprises the steps,
Step 1: near the salt pan of the former halogen exploiting field that will take shone to sylvite and begun saturated bittern, and the mass percentage concentration that described sylvite begins each component in the saturated bittern is as follows: KCl 3.81%-4.74%, NaCl 4.91%-15.92%, MgCl
20%-15.59%, MgSO
45.76%-11.44%;
Step 2: sylvite is begun saturated bittern utilize channel or pipe-line transportation near the salt pan the source mill;
Step 3: sylvite begins near the salt pan of saturated bittern source mill and old halogen by mass ratio 1: 0.5-2 converts halogen, and the mass percentage concentration of each component is as follows in the described old halogen: KCl 0.1%-0.3%, NaCl 0.25%-0.4%, MgCl
227.1%-30.5%, MgSO
44%-5% converts halogen to carnallitite and begins saturated bittern;
Step 4: carnallitite is begun saturated bittern shine to make and contain MgSO
4Carnallitite;
Step 5: extraction contains MgSO
4Carnallitite is by the MgSO that contains per ton
4Carnallitite adds 250-310kg fresh water or 500-600kgK
2SO
4Mother liquor washing after the production;
Step 6: will be through the solid after step 5 washing by solid adding 960-1020kg fresh water per ton, system keeps 40-50 ℃ of temperature, and reaction 20-40min transforms back collection solid and gets vitriolate of tartar.
2. the method for low cost production high quality sylvite according to claim 1 is characterized in that: the sylvite described in the step 3 begins MgCl in the saturated bittern
2With the mass concentration ratio of KCl be 6-7.
3. the method for low cost production high quality sylvite according to claim 1 is characterized in that: the K described in the step 5 or 6
2SO
4The mass percentage concentration of each component is as follows in the mother liquor after the production: KCl 14%, NaCl 1%-2%, MgCl
27%-8%, MgSO
44%-5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100902810A CN102205978A (en) | 2011-04-08 | 2011-04-08 | Method for producing high-quality sylvine in low cost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100902810A CN102205978A (en) | 2011-04-08 | 2011-04-08 | Method for producing high-quality sylvine in low cost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102205978A true CN102205978A (en) | 2011-10-05 |
Family
ID=44695084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100902810A Pending CN102205978A (en) | 2011-04-08 | 2011-04-08 | Method for producing high-quality sylvine in low cost |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217693A (en) * | 2017-12-27 | 2018-06-29 | 地矿集团格尔木盐湖资源开发有限公司 | A kind of salt pan technology using temperature difference separation component |
| CN112441602A (en) * | 2019-08-28 | 2021-03-05 | 中蓝连海设计研究院有限公司 | Salt pan for recovering potassium salt at low cost and method for recovering potassium salt by adopting salt pan |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3642454A (en) * | 1968-06-27 | 1972-02-15 | Kaiser Aluminium Chem Corp | Production of potassium chloride from carnallitic salts |
| CN1131639A (en) * | 1995-11-27 | 1996-09-25 | 中国科学院青海盐湖研究所 | Method for preparing potassium sulfate with sulfate type bittern |
-
2011
- 2011-04-08 CN CN2011100902810A patent/CN102205978A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3642454A (en) * | 1968-06-27 | 1972-02-15 | Kaiser Aluminium Chem Corp | Production of potassium chloride from carnallitic salts |
| CN1131639A (en) * | 1995-11-27 | 1996-09-25 | 中国科学院青海盐湖研究所 | Method for preparing potassium sulfate with sulfate type bittern |
Non-Patent Citations (1)
| Title |
|---|
| 童阳春: "现代盐湖开采技术", 《金属矿山》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217693A (en) * | 2017-12-27 | 2018-06-29 | 地矿集团格尔木盐湖资源开发有限公司 | A kind of salt pan technology using temperature difference separation component |
| CN108217693B (en) * | 2017-12-27 | 2021-03-23 | 地矿集团格尔木盐湖资源开发有限公司 | Salt field technology for separating components by using temperature difference |
| CN112441602A (en) * | 2019-08-28 | 2021-03-05 | 中蓝连海设计研究院有限公司 | Salt pan for recovering potassium salt at low cost and method for recovering potassium salt by adopting salt pan |
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Application publication date: 20111005 |