CN102350399B - Desliming method for low-grade earth surface solid potassium ores - Google Patents

Desliming method for low-grade earth surface solid potassium ores Download PDF

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CN102350399B
CN102350399B CN 201110184880 CN201110184880A CN102350399B CN 102350399 B CN102350399 B CN 102350399B CN 201110184880 CN201110184880 CN 201110184880 CN 201110184880 A CN201110184880 A CN 201110184880A CN 102350399 B CN102350399 B CN 102350399B
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desliming
hydrocyclone
land
ore
thin mud
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CN102350399A (en
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张大义
马金元
张守祥
许爱民
吴志刚
夏义忠
陶文平
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Bluestar Lehigh Engineering Institute
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Bluestar Lehigh Engineering Institute
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Abstract

The invention relates to a desliming method for low-grade earth surface solid potassium ores. The desliming method is characterized by comprising the following steps of: adding low-grade earth surface solid ores and saturated brine into a slurry mixing tank at constant speed, controlling the concentration of ore slurry, and stirring continuously in a mode of complete mixing flow; conveying the ore slurry to a hydrocyclone by using a slag slurry pump to perform a section of classification desliming, so that separated fine silt enters the hydrocyclone for overflowing and flows into a fine silt sedimentation pond, and coarse grain materials enter a bottom flow of the hydrocyclone and flow to a bottom flow surge tank of the hydrocyclone automatically; adding the saturated brine into the surgetank, and controlling the concentration of the ore slurry to be between 10 and 40 percent; and conveying the ore slurry to a vibration screen by using the slag slurry pump to perform two sections of classification desliming, and sieving, so that the fine silt enters undersize products of the vibration screen and flows into the fine silt sedimentation pond, and oversize products of the vibration screen are deslimed ore concentrates. The method has a simple and reasonable process, and the prepared deslimed ore concentrates can be used as floated raw materials. The total desliming rate of two sections of desliming is over 90 percent.

Description

The Desliming method of a kind of low-grade face of land solid kalium mine
Technical field
The present invention relates to the Desliming method in potassium ore deposit, particularly the Desliming method of a kind of low-grade face of land solid kalium mine.
Background technology
China is a country that the potassium ore resources extremely lacks, and in the potassium ore resources based on bittern potassium ore deposit, the solid sylvite ore is few, only account for about 2%, quite a few is the lower solid ore deposit, the face of land of KCE content in solid kalium mine, these solid ore deposits, face of land are most of can't to be utilized because grade is low, clay content is big, if flotation is directly carried out in these solid ore deposits, face of land, will bring poor product quality, problems such as the floating agent consumption is big, the rate of recovery is low, plant capacity reduces greatly, deficiency in economic performance.
Summary of the invention
Technical problem to be solved by this invention is at the prior art deficiency, proposes the method for the low-grade face of land solid kalium mine desliming that a kind of technology is more reasonable, clay is effective.
Technical problem to be solved by this invention is achieved through the following technical solutions.The present invention is the Desliming method of a kind of low-grade face of land solid kalium mine, be characterized in, its step is as follows: be 4.0~12.0% with KCE content (mass percentage content), clay content (mass percentage content) is that 6%~50% solid ore deposit, the low-grade face of land and saturated bittern at the uniform velocity add in surge tank, control ore pulp mass concentration is 10~40%, and carry out the complete mixing flow continuous stirring, the shale thing that sylvite ore and its are adhered to separates fully, with the slag stock pump ore pulp is delivered to then and carries out one section graded desliming in the hydrocyclone, the inlet pressure of control hydrocyclone is 0.10~0.30MPa, the thin mud that separates enters the hydrocyclone overflow and flows into thin mud settling tank, and the coarse fraction material enters the underflow of hydrocyclone and flow to hydrocyclone underflow dashpot certainly; In dashpot, add saturated bittern more again, the ore pulp mass concentration is 10~40% in the control dashpot, with the slag stock pump ore pulp is delivered to then and carries out two sections graded deslimings in the vibratory sieve, through screening, thin mud enters the vibratory sieve screenings and flows into thin mud settling tank, and the vibratory sieve oversize is the desliming concentrate; Described saturated bittern refers to the equal saturated bittern of the contained salt component of face of land solid kalium mine.
In the Desliming method technical scheme of above-described low-grade face of land solid kalium mine, the technical characterictic of preferably selecting is:
1, the ore pulp mass concentration in the surge tank is preferably 20~30%; The ore pulp mass concentration is preferably 20~30% in the dashpot;
2, the time of carrying out the complete mixing flow continuous stirring is preferably 20 ~ 90 minutes;
3, the inlet pressure of hydrocyclone is preferably 0.15~0.25MPa during one section graded desliming; Can make more thin mud enter the cyclone overflow and flow into thin mud settling tank like this, and coarsely graded material enter underflow and flow to cyclone underflow dashpot certainly;
4, enter the overflow of the hydrocyclone in the thin mud settling tank and the screenings of vibratory sieve, process obtains saturated bittern after clarifying, and saturated bittern is returned recycle.
Compared with prior art, the present invention has the following advantages: technology of the present invention is advantages of simple more, can make clay content less than 5% desliming concentrate by technology of the present invention, can directly be used as flotation feed, and its total desliming rate can reach more than 90%.
Description of drawings
Fig. 1 is process chart of the present invention.
The specific embodiment
Below further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not constitute the restriction to its right.
Embodiment 1, with reference to Fig. 1, a kind of method of low-grade face of land solid kalium mine desliming, be 4.0% with KCl content, cement content be 50.0% solid ore deposit, the face of land and saturated bittern by a certain percentage, in surge tank, at the uniform velocity add, and carry out the complete mixing flow continuous stirring, control pulp density 10%, 100 minutes flowsheet of slurry agitation time, with the slag stock pump ore pulp is delivered to hydrocyclone then and carries out one section graded desliming, control cyclone inlet pressure is 0.30MPa, makes most of thin mud enter the cyclone overflow also from flowing to thin mud settling tank.And the coarse fraction material enters the underflow of cyclone and flow to cyclone underflow dashpot certainly, in the buffering tank diameter, add an amount of saturated bittern more again, control pulp density 10%, with the slag stock pump ore pulp is delivered to then and carries out two sections graded deslimings in the vibratory sieve, through screening, thin mud enters the vibratory sieve screenings and flows into thin mud settling tank, and it is 10% that the vibratory sieve oversize is KCl content, clay content is 4.8% desliming concentrate, and total desliming rate of two sections deslimings is 95.6%.
Embodiment 2, with reference to Fig. 1, a kind of method of low-grade face of land solid kalium mine desliming, be 12.0% with KCl content, cement content be 6.0% solid ore deposit, the face of land and saturated bittern by a certain percentage, in surge tank, at the uniform velocity add, and carry out the complete mixing flow continuous stirring, control pulp density 40%, 20 minutes flowsheet of slurry agitation time, with the slag stock pump ore pulp is delivered to hydrocyclone then and carries out one section graded desliming, control cyclone inlet pressure is 0.10MPa, makes most of thin mud enter the cyclone overflow also from flowing to thin mud settling tank.And the coarse fraction material enters the underflow of cyclone and flow to cyclone underflow dashpot certainly, in the buffering tank diameter, add an amount of saturated bittern again, control pulp density 40%, carry out two sections graded deslimings in the vibratory sieve with the slag stock pump ore pulp being delivered to then, through screening, thin mud enters the vibratory sieve screenings and flows into thin mud settling tank, and it is 16% that the vibratory sieve oversize is KCl content, clay content is 2.5% desliming concentrate, and total desliming rate of two sections deslimings is 90.2%.
Embodiment 3, with reference to Fig. 1, a kind of method of low-grade face of land solid kalium mine desliming, be 8.0% with KCl content, cement content be 20.0% solid ore deposit, the face of land and saturated bittern by a certain percentage, in surge tank, at the uniform velocity add, and carry out the complete mixing flow continuous stirring, control pulp density 20%, 40 minutes flowsheet of slurry agitation time, with the slag stock pump ore pulp is delivered to hydrocyclone then and carries out one section graded desliming, control cyclone inlet pressure is 0.25MPa, makes most of thin mud enter the cyclone overflow also from flowing to thin mud settling tank.And the coarse fraction material enters the underflow of cyclone and flow to cyclone underflow dashpot certainly, in the buffering tank diameter, add an amount of saturated bittern again, control pulp density 30%, carry out two sections graded deslimings in the vibratory sieve with the slag stock pump ore pulp being delivered to then, through screening, thin mud enters the vibratory sieve screenings and flows into thin mud settling tank, and it is 12% that the vibratory sieve oversize is KCl content, clay content is 4.0% desliming concentrate, and total desliming rate of two sections deslimings is 92.4%.
Embodiment 4, with reference to Fig. 1, a kind of method of low-grade face of land solid kalium mine desliming, be 6.0% with KCl content, cement content be 35.0% solid ore deposit, the face of land and saturated bittern by a certain percentage, in surge tank, at the uniform velocity add, and carry out the complete mixing flow continuous stirring, control pulp density 30%, 60 minutes flowsheet of slurry agitation time, with the slag stock pump ore pulp is delivered to hydrocyclone then and carries out one section graded desliming, control cyclone inlet pressure is 0.15MPa, makes most of thin mud enter the cyclone overflow also from flowing to thin mud settling tank.And the coarse fraction material enters the underflow of cyclone and flow to cyclone underflow dashpot certainly, in the buffering tank diameter, add an amount of saturated bittern again, control pulp density 20%, carry out two sections graded deslimings in the vibratory sieve with the slag stock pump ore pulp being delivered to then, through screening, thin mud enters the vibratory sieve screenings and flows into thin mud settling tank, and it is 11% that the vibratory sieve oversize is KCl content, clay content is 4.5% desliming concentrate, and total desliming rate of two sections deslimings is 94%.
Embodiment 5, with reference to Fig. 1, a kind of method of low-grade face of land solid kalium mine desliming, be 10.0% with KCl content, cement content be 20.0% solid ore deposit, the face of land and saturated bittern by a certain percentage, in surge tank, at the uniform velocity add, and carry out the complete mixing flow continuous stirring, control pulp density 25%, 90 minutes flowsheet of slurry agitation time, with the slag stock pump it is delivered to hydrocyclone then and carries out one section graded desliming, control cyclone inlet pressure is 0.25MPa, makes most of thin mud enter the cyclone overflow also from flowing to thin mud settling tank.And the coarse fraction material enters the underflow of cyclone and flow to cyclone underflow dashpot certainly, in dashpot, add an amount of saturated bittern again, control pulp density 30%, carry out two sections graded deslimings in the vibratory sieve with the slag stock pump ore pulp being delivered to then, through screening, thin mud enters the vibratory sieve screenings and flows into thin mud settling tank, and it is 14% that the vibratory sieve oversize is KCl content, clay content is 3.5% desliming concentrate, and total desliming rate of two sections deslimings is 91.5%; After the overflow of section cyclowass and the screenings of two sections desliming vibratory sieves flow into thin mud settling tank, through after the clarification of certain hour, get saturated bittern, saturated bittern returns the desliming systemic circulation and uses.

Claims (5)

1. the Desliming method of a low-grade face of land solid kalium mine, it is characterized in that, its step is as follows: be 4.0~12.0% with KCE content, clay content is that 6%~50% solid ore deposit, the low-grade face of land and saturated bittern at the uniform velocity add in surge tank, control ore pulp mass concentration is 10~40%, and carry out the complete mixing flow continuous stirring, the shale thing that sylvite ore and its are adhered to separates fully, with the slag stock pump ore pulp is delivered to then and carries out one section graded desliming in the hydrocyclone, the inlet pressure of control hydrocyclone is 0.10~0.30MPa, the thin mud that separates enters the hydrocyclone overflow and flows into thin mud settling tank, and the coarse fraction material enters the underflow of hydrocyclone and flow to hydrocyclone underflow dashpot certainly; In dashpot, add saturated bittern more again, the ore pulp mass concentration is 10~40% in the control dashpot, with the slag stock pump ore pulp is delivered to then and carries out two sections graded deslimings in the vibratory sieve, through screening, thin mud enters the vibratory sieve screenings and flows into thin mud settling tank, and the vibratory sieve oversize is the desliming concentrate; Described saturated bittern refers to the equal saturated bittern of the contained salt component of face of land solid kalium mine.
2. according to the Desliming method of the described low-grade face of land of claim 1 solid kalium mine, it is characterized in that: the ore pulp mass concentration in the surge tank is 20~30%; The ore pulp mass concentration is 20~30% in the dashpot.
3. according to the method for the described low-grade face of land solid kalium mine desliming of claim 1, the time of carrying out the complete mixing flow continuous stirring is 20 ~ 90 minutes.
4. according to the Desliming method of the described low-grade face of land of claim 1 solid kalium mine, it is characterized in that: the inlet pressure of hydrocyclone is 0.15~0.25MPa during one section graded desliming.
5. according to the method for the described low-grade face of land solid kalium mine desliming of claim 1, it is characterized in that: enter the overflow of the hydrocyclone in the thin mud settling tank and the screenings of vibratory sieve, process obtains saturated bittern after clarifying, and saturated bittern is returned recycle.
CN 201110184880 2011-07-04 2011-07-04 Desliming method for low-grade earth surface solid potassium ores Expired - Fee Related CN102350399B (en)

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CN102583450B (en) * 2012-02-27 2013-11-27 青海中航资源有限公司 Removing method of high undissolved substances and low-grade solid potassium ore undissolved substances
CN107626139A (en) * 2017-11-16 2018-01-26 嵩县金牛有限责任公司 A kind of interim filter of gold mine special shunt
CN112138462A (en) * 2020-08-31 2020-12-29 青海盐湖工业股份有限公司 Method for treating high-sediment carnallite raw ore

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750963A (en) * 1970-10-02 1973-08-07 Intern Minerals & Chemical Cor Benefication of a clay containing sylvinite ore
US3802632A (en) * 1970-10-02 1974-04-09 Int Minerals & Chem Corp Beneficiation of sylvinite ore
CN1817794A (en) * 2005-08-16 2006-08-16 青海中信国安科技发展有限公司 Production of potassium sulfate with potassium mixed salt and carnallite as raw materials
CN101412639A (en) * 2008-10-30 2009-04-22 中国科学院青海盐湖研究所 Method for preparing potash magnesium sulphate fertilizer from potassium-containing solid mine by separation and extraction

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Publication number Priority date Publication date Assignee Title
CA2542289A1 (en) * 2005-04-07 2006-10-07 The Mosaic Company Use of urea-formaldehyde resin in potash ore processing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750963A (en) * 1970-10-02 1973-08-07 Intern Minerals & Chemical Cor Benefication of a clay containing sylvinite ore
US3802632A (en) * 1970-10-02 1974-04-09 Int Minerals & Chem Corp Beneficiation of sylvinite ore
CN1817794A (en) * 2005-08-16 2006-08-16 青海中信国安科技发展有限公司 Production of potassium sulfate with potassium mixed salt and carnallite as raw materials
CN101412639A (en) * 2008-10-30 2009-04-22 中国科学院青海盐湖研究所 Method for preparing potash magnesium sulphate fertilizer from potassium-containing solid mine by separation and extraction

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