CN104971821B - A kind of method that potassium mixed salt is handled using dense media and direct floatation process - Google Patents
A kind of method that potassium mixed salt is handled using dense media and direct floatation process Download PDFInfo
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- CN104971821B CN104971821B CN201510268637.3A CN201510268637A CN104971821B CN 104971821 B CN104971821 B CN 104971821B CN 201510268637 A CN201510268637 A CN 201510268637A CN 104971821 B CN104971821 B CN 104971821B
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Abstract
The present invention is a kind of method for handling potassium mixed salt using dense media and direct floatation process, belongs to technical field of mineral processing, first by potassium mixed salt crushing raw ore to 8 ~ below 20mm；Three products heavy medium cyclone is fed again to be sorted, and sub-elects three overflow product, chats product and desilting product products；Desilting product feeds the fineness that sylvite rod mill is milled to suitable flotation, and classification, undersize material feeds sylvite direct flotation operation；Chats product and overflow product directly feed carnallite rod milling machine operation, and classification undersize material feeds desliming operation；Underflow feeds cold crystallization operation；The underflow of crystallizer feeds carnallite direct flotation operation.The inventive method has the advantages that obtained KCl product granularities are thick, the rate of recovery is higher, obvious economic.
Description
Technical field
It is more particularly to a kind of to be mixed using dense media and direct floatation process processing potassium the invention belongs to technical field of mineral processing
The method of salt.
Background technology
At present, agricultural KCl in the world mainly selects from salt lake bittern, sylvite mineral deposit, carnallite deposit, China
Potash Resources be mainly soluble potassium salt resource, based on liquid brine mineral deposit, with being mainly distributed on Chaidamu Basin, Qinghai Province
Area and Xinjiang Lop Nur Salt Lake Area；The potash fertilizer big producer such as Russia, Canada adopts mainly using solid sylvite ore as raw material
With direct floatation process produce coarse grain potassium chloride, also have some national Potash Resources using solid carnallite as raw material, adopt
With the potassium chloride of cold crystallization-direct floatation process.China is a potash fertilizer consumption big country, is required for the substantial amounts of potassium of import every year
Fertilizer, in order to alleviate relation between supply and demand, China develops the Potash Resources of foreign countries step by step.When therefore, for developing sylvite abroad, such as
What can improve the quality and the rate of recovery of potassium chloride concentrate as much as possible, reduce beneficiation cost and have important practical significance.
At present, existing sylvite also has carnallite in some external solid potassium salt mineral deposit, for the ore of this type,
Cold crystallization-direct floatation process typically is used, because the sylvite particle that cold crystallization technique obtains is smaller, and due in mother liquor
Mg2+Concentration is higher, and the flotation to sylvite has a certain impact, and causes the KCl rate of recovery relatively low, is typically only 70% ~ 75%, and
In agriculture potash fertilizer market, the thicker sale effect of KCl granularities better, is all emphasized to give birth in the potash fertilizer big producer such as Russia, Canada
Coarse grain potash fertilizer is produced, granularity can reach 3mm.
The content of the invention
The technical problems to be solved by the invention are in view of the shortcomings of the prior art, there is provided a kind of technique is more reasonable, can
Effectively to reclaim use dense media and the direct flotation of the KCl in raw ore both containing sylvite or the solid potassium mixed salt for having carnallite
The method of PROCESS FOR TREATMENT potassium mixed salt.
The technical problems to be solved by the invention are realized by following technical scheme.The present invention is a kind of use
The method of dense media and direct floatation process processing potassium mixed salt, is characterized in, its step is as follows：
（1）By potassium mixed salt raw ore through crushing operation, 8 ~ below 20mm is crushed to；
（2）Material after will be broken feeds three products heavy medium cyclone and sorted, and sub-elects overflow product, Mineral
Three products of product and desilting product；
（3）Desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；
（4）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds sylvite direct flotation operation, carries out flotation operation；
（5）1 roughing is passed through in direct flotation operation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（6）Chats product is mainly the intergrowth of carnallite and sylvite, after chats product and overflow product mix directly
Give
Enter carnallite rod milling machine operation, be milled to the fineness of suitable cold crystallization；
（7）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds desliming operation；
（8）The underflow of desliming operation feeds cold crystallization operation；
（9）The underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；
（10）1 roughing is passed through in the operation of carnallite direct flotation, and 2 ~ 3 times selected, finally selects KCl concentrate.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Step（1）In：Described potassium mixed salt raw ore is sylvite/carnallite=2:8~8:2 mixture.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Step（1）In：Described potassium mixed salt raw ore is sylvite/carnallite=6:4~4:6 mixture.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Sylvite direct flotation and carnallite direct flotation are by the way of independent backwater.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Step（2）In, using three products heavy medium cyclone sort into medium solid selects magnet
Ore deposit.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Step（3）In：Sylvite rod milling ore grinding is to 1 ~ below 2mm.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Step（6）In：Carnallite rod milling ore grinding is to 0.5 ~ below 1mm.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Step（5）Or（10）In：Amine cation-collecting agent, described amine sun are added in roughing operation
Ion collecting agent is selected from C16-22Primary amine hydrochloride or primary amine acetate or acid amides acetate or ether amines acetate.
It is of the present invention a kind of using in the method and technology scheme of dense media and direct floatation process processing potassium mixed salt, enter one
Walking preferable technical scheme is：Step（5）Or（10）In：Sludge inhibitor, the choosing of described sludge inhibitor are added in roughing operation
From starch or cellulose family inhibitor.
The inventive method goes for any potassium mixed salt raw ore, preferable potassium mixed salt raw ore main component percentage by weight
Than containing KCl 20.40 ~ 24.34%, NaCl 42.83 ~ 63.58%, MgCl24.61 ~ 17.32%, CaSO40.27 ~ 0.35%, water is not
Molten thing 0.51 ~ 0.78%.
The density of sylvite and halite is 1.99 g/cm3, the density of carnallite is 1.60 g/cm3, both density contrasts are
>0.3, the condition using dense medium separation can be met.
The present invention, as pre-selection device, the potassium mixed salt raw ore containing sylvite and carnallite is divided using heavy medium cyclone
The rich ore of sylvite, the intergrowth of sylvite and carnallite, the rich ore of carnallite this three parts are hanked, sylvite rich ore is using thick
Particle sylvite direct floatation process, obtain the coarse grain KCl that granularity is 1 ~ below 3mm, and the intergrowth of sylvite and carnallite, light
The rich ore of halogen stone mixes by ore grinding-desliming-cold crystallization-direct floatation process, obtains 0.1 ~ below 0.5mm KCl.
Compared with traditional handicraft, the present invention due to, as pre-selection device, having taken out one in advance using heavy medium cyclone
Divide the rich ore of sylvite, because the mog of sylvite ore requirement is relatively low, reduce the energy consumption of ore grinding, and gained accordingly
KCl granularity of concentrate it is thick, the grade and the rate of recovery of KCl concentrate are higher, and sylvite and carnallite are kept away using individually processing
Mg in carnallite is exempted from2+Influence to sylvite direct flotation.The KCl concentrate grades of sylvite flotation acquisition are in the inventive method
More than 95.0%, the rate of recovery is 85 ~ 88%, and the KCl concentrate grades that carnallite cold crystallization-direct flotation obtains are more than 94.0%, are returned
Yield is 65 ~ 72%.
Brief description of the drawings
Fig. 1 is a kind of process chart of the inventive method.
Embodiment
Referring to the drawings, the concrete technical scheme of the present invention is further described, in order to which those skilled in the art enters
One step the present invention is understood, without forming the limitation to its right.
Embodiment 1, a kind of method for handling potassium mixed salt using dense media and direct floatation process, its step are as follows：
（1）By potassium mixed salt raw ore through crushing operation, below 8mm is crushed to；
（2）Material after will be broken feeds three products heavy medium cyclone and sorted, and sub-elects overflow product, Mineral
Three products of product and desilting product；
（3）Desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；
（4）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds sylvite direct flotation operation, carries out flotation operation；
（5）1 roughing is passed through in direct flotation operation, and 2 times selected, finally selects KCl concentrate；
（6）Chats product is mainly the intergrowth of carnallite and sylvite, after chats product and overflow product mix directly
Give
Enter carnallite rod milling machine operation, be milled to the fineness of suitable cold crystallization；
（7）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds desliming operation；
（8）The underflow of desliming operation feeds cold crystallization operation；
（9）The underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；
（10）1 roughing is passed through in the operation of carnallite direct flotation, and 2 times selected, finally selects KCl concentrate.
Embodiment 2, a kind of method for handling potassium mixed salt using dense media and direct floatation process, its step are as follows：
（1）By potassium mixed salt raw ore through crushing operation, below 20mm is crushed to；
（2）Material after will be broken feeds three products heavy medium cyclone and sorted, and sub-elects overflow product, Mineral
Three products of product and desilting product；
（3）Desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；
（4）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds sylvite direct flotation operation, carries out flotation operation；
（5）1 roughing is passed through in direct flotation operation, and 3 times selected, finally selects KCl concentrate；
（6）Chats product is mainly the intergrowth of carnallite and sylvite, after chats product and overflow product mix directly
Give
Enter carnallite rod milling machine operation, be milled to the fineness of suitable cold crystallization；
（7）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds desliming operation；
（8）The underflow of desliming operation feeds cold crystallization operation；
（9）The underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；
（10）1 roughing is passed through in the operation of carnallite direct flotation, and 3 times selected, finally selects KCl concentrate.
Embodiment 3, described in embodiment 1 or 2 the step of handling the method for potassium mixed salt using dense media and direct floatation process
（1）In：Described potassium mixed salt raw ore is sylvite/carnallite=2:8~8:2 mixture.
Embodiment 4, described in embodiment 1 or 2 the step of handling the method for potassium mixed salt using dense media and direct floatation process
（1）In：Described potassium mixed salt raw ore is sylvite/carnallite=6:4~4:6 mixture.
Embodiment 5, the side that potassium mixed salt is handled using dense media and direct floatation process described in embodiment 1-4 any one
In method：Sylvite direct flotation and carnallite direct flotation are by the way of independent backwater.
Embodiment 6, the side that potassium mixed salt is handled using dense media and direct floatation process described in embodiment 1-5 any one
The step of method（2）In, using three products heavy medium cyclone sort into medium solid selects magnetic iron ore.
Embodiment 7, the side that potassium mixed salt is handled using dense media and direct floatation process described in embodiment 1-6 any one
The step of method（3）In, sylvite rod milling ore grinding to 1 ~ below 2mm.
Embodiment 8, the side that potassium mixed salt is handled using dense media and direct floatation process described in embodiment 1-7 any one
The step of method（6）In, carnallite rod milling ore grinding to 0.5 ~ below 1mm.
Embodiment 9, the side that potassium mixed salt is handled using dense media and direct floatation process described in embodiment 1-8 any one
The step step of method（5）Or（10）In：Amine cation-collecting agent, the choosing of described amine cation-collecting agent are added in roughing operation
From C16-22Primary amine hydrochloride or primary amine acetate or acid amides acetate or ether amines acetate.
Embodiment 10, the side that potassium mixed salt is handled using dense media and direct floatation process described in embodiment 1-9 any one
The step step of method（5）Or（10）In：Sludge inhibitor is added in roughing operation, and described sludge inhibitor is selected from starch or fibre
Tie up plain class inhibitor.
The dense media reclaimer used in the experiment of following examples uses the counter-current magnetic separator of weak magnetic half, dense medium cyclone
Stream device is free-flow three-product heavy medium cyclone, aggravate to be situated between be configured to 1.65 from the magnetic iron ore that grade is TFe 67.00% ~
1.85g/cm3Heavy suspension, desliming device is cyclone, and classifying equipoment selects straight line shaker, and grinding attachment is from rod mill, floating
Machine is selected to select coarse grain flotation machine.The potassium mixed salt raw ore of selection is somewhere mineral products, and main component contains KCl by weight percentage
20.40 ~ 24.34%, NaCl 42.83 ~ 63.58%, MgCl24.61 ~ 17.32%, CaSO40.27 ~ 0.35%, water-insoluble
0.51~0.78%。
Embodiment 10, a kind of methods experiment one that potassium mixed salt is handled using dense media and direct floatation process：Main component is pressed
Percentage by weight contains KCl 20.40%, NaCl 42.83%, MgCl217.32%, CaSO40.27%, water-insoluble 0.78%.Side
Method is as follows：
（1）By potassium mixed salt raw ore through crushing operation, below 12mm is crushed to；
（2）Material after will be broken feeds three products heavy medium cyclone and sorted, and sub-elects overflow product, Mineral
Three products of product and desilting product；
（3）Desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；
（4）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds sylvite direct flotation operation, carries out flotation operation；
（5）1 roughing is passed through in direct flotation operation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（6）Chats product is mainly the intergrowth of carnallite and sylvite, after chats product and overflow product mix directly
Give
Enter carnallite rod milling machine operation, be milled to the fineness of suitable cold crystallization；
（7）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds desliming operation；
（8）The underflow of desliming operation feeds cold crystallization operation；
（9）The underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；
（10）1 roughing is passed through in the operation of carnallite direct flotation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（11）Sylvite flotation and carnallite floatation are by the way of independent backwater.
The KCl concentrate grades that sylvite flotation obtains in the present embodiment are 95.0%, and the rate of recovery 86.05%, carnallite is cold
The KCl concentrate grades that crystallization-direct flotation obtains are 94.0%, the rate of recovery 67.08%.
Embodiment 11, a kind of methods experiment two that potassium mixed salt is handled using dense media and direct floatation process：Main component is pressed
Percentage by weight contains KCl 21.71%, NaCl 49.75%, MgCl213.08%, CaSO40.30%, water-insoluble 0.69%.Side
Method is as follows：
（1）By potassium mixed salt raw ore through crushing operation, below 15mm is crushed to；
（2）Material after will be broken feeds three products heavy medium cyclone and sorted, and sub-elects overflow product, Mineral
Three products of product and desilting product；
（3）Desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；
（4）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds sylvite direct flotation operation, carries out flotation operation；
（5）1 roughing is passed through in direct flotation operation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（6）Chats product is mainly the intergrowth of carnallite and sylvite, after chats product and overflow product mix directly
Give
Enter carnallite rod milling machine operation, be milled to the fineness of suitable cold crystallization；
（7）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds desliming operation；
（8）The underflow of desliming operation feeds cold crystallization operation；
（9）The underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；
（10）1 roughing is passed through in the operation of carnallite direct flotation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（11）Sylvite flotation and carnallite floatation are by the way of independent backwater.
The KCl concentrate grades that the flotation of this experiment sylvite obtains are 95.0%, the rate of recovery 85.87%, carnallite cold junction
The KCl concentrate grades that crystalline substance-direct flotation obtains are 93.5%, the rate of recovery 66.78%.
Embodiment 12, a kind of methods experiment three that potassium mixed salt is handled using dense media and direct floatation process：Main component is pressed
Percentage by weight contains KCl 23.03%, NaCl 56.66%, MgCl28.85%, CaSO40.32%, water-insoluble 0.60%.Method
It is as follows：
（1）By potassium mixed salt raw ore through crushing operation, below 10mm is crushed to；
（2）Material after will be broken feeds three products heavy medium cyclone and sorted, and sub-elects overflow product, Mineral
Three products of product and desilting product；
（3）Desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；
（4）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds sylvite direct flotation operation, carries out flotation operation；
（5）1 roughing is passed through in direct flotation operation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（6）Chats product is mainly the intergrowth of carnallite and sylvite, after chats product and overflow product mix directly
Give
Enter carnallite rod milling machine operation, be milled to the fineness of suitable cold crystallization；
（7）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds desliming operation；
（8）The underflow of desliming operation feeds cold crystallization operation；
（9）The underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；
（10）1 roughing is passed through in the operation of carnallite direct flotation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（11）Sylvite flotation and carnallite floatation are by the way of independent backwater.
The KCl concentrate grades that sylvite flotation obtains in this experiment are 95.0%, the rate of recovery 87.05%, carnallite cold junction
The KCl concentrate grades that crystalline substance-direct flotation obtains are 93.5%, the rate of recovery 69.08%.
Embodiment 13, a kind of methods experiment four that potassium mixed salt is handled using dense media and direct floatation process：Main component is pressed
Percentage by weight contains KCl 24.34%, NaCl 63.58%, MgCl24.61%, CaSO40.35%, water-insoluble 0.51%.Method
It is as follows：
（1）By potassium mixed salt raw ore through crushing operation, below 18mm is crushed to；
（2）Material after will be broken feeds three products heavy medium cyclone and sorted, and sub-elects overflow product, Mineral
Three products of product and desilting product；
（3）Desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；
（4）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds sylvite direct flotation operation, carries out flotation operation；
（5）1 roughing is passed through in direct flotation operation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（6）Chats product is mainly the intergrowth of carnallite and sylvite, after chats product and overflow product mix directly
Give
Enter carnallite rod milling machine operation, be milled to the fineness of suitable cold crystallization；
（7）The ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, screenings
Material feeds desliming operation；
（8）The underflow of desliming operation feeds cold crystallization operation；
（9）The underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；
（10）1 roughing is passed through in the operation of carnallite direct flotation, and 2 ~ 3 times selected, finally selects KCl concentrate；
（11）Sylvite flotation and carnallite floatation are by the way of independent backwater.
The KCl concentrate grades that sylvite flotation obtains in this experiment are 95.0%, the rate of recovery 87.05%, carnallite cold junction
The KCl concentrate grades that crystalline substance-direct flotation obtains are 94.0%, the rate of recovery 68.58%.
Claims (9)
- A kind of 1. method that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that its step is as follows：(1) potassium mixed salt raw ore is crushed to below 20mm through crushing operation；(2) will it is broken after material feed three products heavy medium cyclone and sorted, sub-elect overflow product, chats product and Three products of desilting product；(3) desilting product is mainly sylvite, directly feeds sylvite rod milling machine operation, is milled to the fineness of suitable flotation；(4) ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, and undersize material is given Enter sylvite direct flotation operation, carry out flotation operation；(5) 1 roughing is passed through in direct flotation operation, and 2~3 times selected, finally selects KCl concentrate；(6) chats product is mainly the intergrowth of carnallite and sylvite, is directly fed after chats product and overflow product mix Carnallite rod milling machine operation, it is milled to the fineness of suitable cold crystallization；(7) ore pulp of milled feeds gradation sizing operation, forms closed-circuit system, and on-the-sieve material returns to rod mill, and undersize material is given Enter desliming operation；(8) underflow of desliming operation feeds cold crystallization operation；(9) underflow of crystallizer feeds carnallite direct flotation operation, carries out flotation operation；(10) 1 roughing is passed through in the operation of carnallite direct flotation, and 2~3 times selected, finally selects KCl concentrate.
- 2. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that step Suddenly in (1)：Described potassium mixed salt raw ore is sylvite/carnallite=2:8~8:2 mixture.
- 3. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that step Suddenly in (1)：Described potassium mixed salt raw ore is sylvite/carnallite=6:4~4:6 mixture.
- 4. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that：Potassium Halite direct flotation and carnallite direct flotation are by the way of independent backwater.
- 5. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that step Suddenly in (2), when being sorted using three products heavy medium cyclone, medium solid selects magnetic iron ore.
- 6. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that step Suddenly in (3)：Sylvite rod milling ore grinding is to below 2mm.
- 7. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that step Suddenly in (6)：Carnallite rod milling ore grinding is to below 1mm.
- 8. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that step Suddenly in (5) or (10)：Amine cation-collecting agent is added in roughing operation, and described amine cation-collecting agent is selected from C16-22Primary amine Hydrochloride or primary amine acetate or acid amides acetate or ether amines acetate.
- 9. the method according to claim 1 that potassium mixed salt is handled using dense media and direct floatation process, it is characterised in that step Suddenly in (5) or (10)：Sludge inhibitor is added in roughing operation, and described sludge inhibitor is selected from starch or cellulose family suppresses Agent.
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| CN112007751A (en) * | 2019-12-16 | 2020-12-01 | 中蓝连海设计研究院有限公司 | Method for treating potassium mixed salt type ore by adopting dense medium and cold crystallization direct flotation |
| WO2024000083A1 (en) * | 2022-06-27 | 2024-01-04 | 华东理工大学 | Efficient flotation reagent suitable for direct flotation production of potassium chloride |
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| CN102284349A (en) * | 2011-07-19 | 2011-12-21 | 罗贵达 | Impurity-removal separation and purification method for weathering type feldspar ore |
| CN102963912A (en) * | 2012-12-25 | 2013-03-13 | 中蓝连海设计研究院 | Process for producing potassium chloride by using potassic salt ores |
| CN103145152A (en) * | 2013-04-11 | 2013-06-12 | 中蓝连海设计研究院 | Process for extracting potassium chloride by coarse flotation of primary sylvine ores |
| CN103831164A (en) * | 2014-02-24 | 2014-06-04 | 太原理工大学 | Gravity-flotation joint separation technology for coking middlings |
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2015
- 2015-05-22 CN CN201510268637.3A patent/CN104971821B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1806931A (en) * | 2006-01-27 | 2006-07-26 | 湖北宜化大江复合肥有限公司 | Mineral dressing method of mid-low grade collophane |
| CN101898168A (en) * | 2010-07-21 | 2010-12-01 | 衡阳县湘雁矿业有限公司 | Beneficiation method for removing long quarry impurities by adopting strong magnetic flotation |
| CN102284349A (en) * | 2011-07-19 | 2011-12-21 | 罗贵达 | Impurity-removal separation and purification method for weathering type feldspar ore |
| CN102963912A (en) * | 2012-12-25 | 2013-03-13 | 中蓝连海设计研究院 | Process for producing potassium chloride by using potassic salt ores |
| CN103145152A (en) * | 2013-04-11 | 2013-06-12 | 中蓝连海设计研究院 | Process for extracting potassium chloride by coarse flotation of primary sylvine ores |
| CN103831164A (en) * | 2014-02-24 | 2014-06-04 | 太原理工大学 | Gravity-flotation joint separation technology for coking middlings |
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