CN114602645A - Collophanite pre-screening, scrubbing and desliming combined treatment method - Google Patents
Collophanite pre-screening, scrubbing and desliming combined treatment method Download PDFInfo
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- CN114602645A CN114602645A CN202210312690.9A CN202210312690A CN114602645A CN 114602645 A CN114602645 A CN 114602645A CN 202210312690 A CN202210312690 A CN 202210312690A CN 114602645 A CN114602645 A CN 114602645A
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- ore
- desliming
- screening
- scrubbing
- collophanite
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000012216 screening Methods 0.000 title claims abstract description 39
- 238000005201 scrubbing Methods 0.000 title claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 12
- 229910019142 PO4 Inorganic materials 0.000 description 10
- 239000010452 phosphate Substances 0.000 description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002367 phosphate rock Substances 0.000 description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
- B03B5/34—Applications of hydrocyclones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a collophanite pre-screening, scrubbing and desliming combined treatment method, and relates to the technical field of collophanite scrubbing and desliming. Pre-screening the crude collophanite ore which is primarily crushed by adopting a screening device, scrubbing and desliming the oversize material which enters an ore washer, and selling the undersize material which is used as a finished ore 2 after ore blending; the overflow powder ore of the ore washer enters a swirler for graded desliming, and the lump ore of which the bottom is scrubbed and deslimed enters a secondary screening and desliming procedure; after the lump ore is graded by the linear sieve, the lump ore of the upper sieve is crushed by a crusher and then used as finished ore and the lump ore of the lower sieve together as finished ore 2 to be sold after ore blending; taking the ore grains of the intermediate screen as finished ore 1; the fine ore enters a first-stage cyclone for graded desliming, the overflow enters a second-stage cyclone for graded desliming again, and underflow fine ore products of the first-stage cyclone and the second-stage cyclone are combined and then filtered and dehydrated to obtain fine ore, so that the problem that a large amount of fine ore enters a ore washer, and the problem of slurry overflow of the ore washer and a sand pump is solved.
Description
Technical Field
The invention relates to the technical field of collophanite scrubbing and desliming, in particular to a collophanite pre-screening scrubbing and desliming combined treatment method.
Background
Before the phosphorite enters the ore blending and production process, a washing machine and a swirler are usually used for scrubbing and desliming to produce the phosphorite and the acid method ore. By adopting the scrubbing and desliming process, the mud amount mixed in the ore is removed, the sesquialter in the phosphate ore is reduced, the phosphate concentrate ore with better quality is obtained, and the grade of the phosphate ore can be effectively improved by 1-1.5%. But the granularity requirement of the phosphate ore required by the process is higher, and the proportion of the fine ore with the grain diameter of-4 mm in the phosphate ore is less than 30 percent. With the increase of-4 mm powder ore amount in the mined phosphate ore in recent years, a series of problems are brought by the existing scrubbing and desliming process: the ore fines passing through the ore washer have small granularity and strong adhesion, so that the ore washer and the sand pump diffuse pulp, the load of the cyclone and the filter is increased, the hourly output of a separation plant is reduced, and the energy consumption is increased.
Disclosure of Invention
The invention aims to provide a collophanite pre-screening, scrubbing and desliming combined treatment method, which solves the problems of increased equipment load and increased energy consumption and reduced yield caused by the increased content of fine ore in the existing scrubbing and desliming process.
In order to solve the technical problem, the invention adopts the following technical scheme: the collophanite pre-screening, scrubbing and desliming combined treatment method is characterized by comprising the following steps:
s1, pre-screening the primary crushed collophanite raw ore by using a screening device, scrubbing and desliming the oversize material with the thickness of +15mm in an ore washer, and selling the undersize material with the thickness of-15 mm as finished ore 2 after ore blending;
s2, enabling overflow powder ore of the ore washer to enter a swirler for graded desliming, and enabling lump ore subjected to bottom scrubbing and desliming to enter a secondary screening and desliming process;
s3, after grading the lump ores through the linear sieve, crushing the lump ores of the upper-layer sieve in a crusher to be used as finished ores and the lump ores of the lower-layer sieve to be used as finished ores 2, and selling the finished ores after ore blending; taking the ore grains of the intermediate screen as finished ore 1;
and S4, enabling the fine ores in the step S2 to enter a first-stage cyclone for graded desliming, enabling overflow to enter a second-stage cyclone for graded desliming again, combining underflow fine ore products of the first-stage cyclone and the second-stage cyclone, filtering and dehydrating to obtain fine ores with the water content of less than 18%, and using the fine ores as finished ore 2, and enabling overflow of the second-stage cyclone to be used as tailings.
The further technical proposal is that the proportion of-4 mm grade products to +4mm grade products in the raw collophanite ore in the step S1 is more than 30: 70.
a further technical scheme is that the sieve gap of the overflow screen of the ore washer is 4 mm.
The further technical proposal is that the grain diameter of the lump ore of the upper layer sieve is plus 50mm, the grain diameter of the ore of the middle sieve is between plus 30mm and minus 50mm, and the grain diameter of the lump ore of the lower layer sieve is minus 30mm in the step S3.
The further technical proposal is that the particle size of the crushed upper-layer sieve in the step S3 is-30 mm.
The further technical proposal is that the particle size of the underflow ore particles of the first-stage cyclone in the step S4 is between +74um and-4 mm, the particle size of the underflow ore particles of the second-stage cyclone is between +19um and-74 mm, and the particle size of the overflow ore particles of the second-stage cyclone is-19 um.
The further technical proposal is that the finished product ore 1 is used as yellow phosphorus ore, and the finished product ore 2 is used as acid method ore.
Compared with the prior art, the invention has the beneficial effects that: the collophanite pre-screening scrubbing desliming combined treatment method is provided, the collophanite is directly screened out by a pre-screening step to be treated as finished ore, the low-grade fine ore is recycled by ore blending, and the waste of mineral resources is reduced. Only the +15mm raw ore enters the ore washer to be scrubbed and desliming, so that a large amount of fine ore is prevented from entering the ore washer, the problem of slurry overflowing of the ore washer and a sand pump is avoided, the load of the ore washer is reduced, and the yield is improved. The overflow after scrubbing and desliming is classified by a swirler twice and then a part of the overflow is recycled and reused, after lump ore is sieved again, a part of the crushed ore is directly used as finished ore with a lower layer sieve, and an intermediate sieve is used as another kind of finished ore.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Figure 1 shows a collophanite pre-screening, scrubbing and desliming combined treatment method,
the collophanite raw ore after the preliminary crushing enters a pre-screening process, a screening device is used for screening, lump ore larger than 15mm enters a washer for primary scrubbing and desliming, and powder ore smaller than 15mm is directly conveyed by a belt conveyor to become finished ore 2 to wait for ore blending and selling.
The screen clearance of the overflow screen of the ore washer is 4mm, and after lump ore with the particle size of 4mm is subjected to secondary screening and desliming procedures after being scrubbed by the ore washer, the lump ore is screened by using a linear screen. The larger lump ore with the grain size of 50mm and the upper layer of sieve enters a crusher to be crushed into a product with the grain size of 30mm below zero, and the finished ore 2 is sold after the ore blending; the intermediate screen plus lump ore with the granularity of 30mm to minus 50mm becomes finished ore 1; the lump ore with the size of minus 30mm on the lower layer becomes finished ore 2 to be sold after ore blending.
And (3) scrubbing the fine ore with the particle size of less than 4mm by using an ore washer, and entering a hydrocyclone along with the overflow of the ore washer to carry out classification desliming. Wherein, the overflow of the ore washer enters a first-stage swirler for graded desliming, the overflow of the first-stage swirler enters a second-stage swirler for graded desliming again, the overflow of the second-stage swirler becomes final tailings, and the underflow of the first-stage swirler and the underflow of the second-stage swirler are combined and enter a filter and a dewatering screen for concentrate dewatering operation.
Wherein, the-4 mm powder ore pulp enters a first-stage 350mm cyclone for graded desliming, the plus 74um to-4 mm size fraction fine ore products are recovered, the overflow enters a second-stage 125mm cyclone for graded desliming again, and the plus 19um to-74 mm fine grain fraction fine ore products are recovered. And combining the underflow fine ore products of the two cyclones, and feeding the combined underflow fine ore products into a filter and a dewatering screen to obtain fine ore with the water content of less than 18%, so that finished ore 2 is formed and waits for ore blending for sale. The overflow of the secondary cyclone, i.e. the fine fraction products smaller than 19um, becomes tailings.
The finished product ore 2 is used as an acid method ore and comprises 15mm below the screen in the pre-screening process, 30mm below the screen (the material of the upper screen and the material of the lower screen after the upper screen of the linear screen is crushed) and 19um to 4mm below the screen (the concentrate after the bottom flows in the first-stage cyclone and the second-stage cyclone are combined). The finished ore with several grain sizes is mixed according to the manufacturer requirement and matched, and the weighted quality reaches the manufacturer requirement and then is directly sold.
The finished ore 1 is yellow phosphorus ore with the main granularity of +30mm to-50 mm, is used when the manufacturer requires to provide yellow phosphorus ore, and only the finished ore 2 can be produced without producing the finished ore 1 when the yellow phosphorus ore is not produced.
Under the condition of the selected phosphate ore with the same property and the same powder ore proportion, the pre-screening, scrubbing and desliming combined treatment method disclosed by the invention and shown in the figure 1 is used for treatment, the comparative process is the treatment method without the step S1, the pre-screening, scrubbing and desliming combined treatment method and the pre-screening, scrubbing and desliming combined treatment method are used for carrying out comparative tests on the pre-screening, scrubbing and desliming combined treatment method, the pre-screening, scrubbing and desliming combined treatment method and the pre-screening, scrubbing and desliming combined treatment method are used for co-producing 43 shifts, and the production results are shown in the table 1.
TABLE 1 comparison of the production data of the inventive process with the original process
| Item | Comparative Process | The process of the invention | Comparison of conditions |
| Hourly production | 319.84 | 375.4 | Increase by 55.56t/h |
| Water consumption per hour | 190.89 | 151.56 | Reduction 39.33m3 |
| Hourly power consumption | 652.78 | 550.38 | Reduction of 102.4kwh |
According to the comparison condition of production data, the process of the invention is used for production comparison with a comparison process: the hourly output of the ore produced by the process is increased by 55.56 t/h; the water consumption in hours is reduced by 39.33m3The hourly power usage was reduced by 102.4kwh, thus it can be seen that the addition of the pre-screening step of step S1 can improve throughput and reduce energy consumption.
The combined pre-screening, scrubbing and desliming process of the present invention as shown in fig. 1 was used to produce phosphate ores of different fines proportions with the results of the production tests shown in table 2.
TABLE 2 comparison of production data of phosphate ores with different fine ore ratios
| Ratio of fine ore (-4mm) to lump ore (+4mm) | Hourly throughput (t/h) | Hourly power consumption (kwh/h) | Hourly water consumption (m)3/h) |
| 32.85：67.15 | 400.08 | 512.37 | 164.25 |
| 45.62：54.38 | 447.68 | 491.03 | 152.41 |
| 69.93：30.07 | 467.92 | 482.44 | 147.23 |
According to the production data, it is shown that: when the ratio of fine ore (-4mm) to lump ore (+4mm) is 69.93:30.07, the increase of hourly throughput is maximum, and the hourly power consumption and water consumption are reduced most, so that the hourly output of a plant can be effectively improved, the water and power consumption is reduced, and the hourly output is improved. In conclusion, with the increase of the proportion of the fine ore (-4mm) in the selected phosphate ore, the process has stronger applicability, the more the hourly treatment amount of the selected plant is increased, the more the hourly water and power consumption are reduced, and the higher the production efficiency is.
In conclusion, the collophanite pre-screening, scrubbing and desliming combined treatment method provided by the invention is proved to have higher application value, and the production cost is reduced while the production efficiency is improved when the collophanite with higher fine ore content is produced.
While the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the disclosure. More specifically, various variations and modifications are possible in the component parts or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts or arrangements, other uses will also be apparent to those skilled in the art.
Claims (7)
1. A collophanite pre-screening, scrubbing and desliming combined treatment method is characterized by comprising the following steps:
s1, pre-screening the primary crushed collophanite raw ore by using a screening device, scrubbing and desliming the oversize material with the thickness of +15mm in an ore washer, and selling the undersize material with the thickness of-15 mm as finished ore 2 after ore blending;
s2, enabling overflow powder ore of the ore washer to enter a swirler for graded desliming, and enabling lump ore subjected to bottom scrubbing and desliming to enter a secondary screening and desliming process;
s3, after grading the lump ores through the linear sieve, crushing the lump ores of the upper-layer sieve in a crusher to be used as finished ores and the lump ores of the lower-layer sieve to be used as finished ores 2, and selling the finished ores after ore blending; taking the ore grains of the intermediate screen as finished ore 1;
and S4, enabling the fine ores in the step S2 to enter a first-stage cyclone for graded desliming, enabling overflow to enter a second-stage cyclone for graded desliming again, combining underflow fine ore products of the first-stage cyclone and the second-stage cyclone, filtering and dehydrating to obtain fine ores with the water content of less than 18%, and using the fine ores as finished ore 2, and enabling overflow of the second-stage cyclone to be used as tailings.
2. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, characterized in that: in the step S1, the ratio of the-4 mm size fraction product to the +4mm size fraction product in the raw collophanite ore is more than 30: 70.
3. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, characterized in that: the screen gap of the overflow screen of the ore washer is 4 mm.
4. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, characterized in that: in the step S3, the grain size of the lump ore of the upper-layer sieve is +50mm, the grain size of the ore of the middle sieve is +30mm to-50 mm, and the grain size of the lump ore of the lower-layer sieve is-30 mm.
5. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, characterized in that: in the step S3, the particle size of the crushed upper-layer sieve is-30 mm.
6. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, characterized in that: in the step S4, the particle size of the underflow ore particles of the first-stage cyclone is between +74um and-4 mm, the particle size of the underflow ore particles of the second-stage cyclone is between +19um and-74 mm, and the particle size of the overflow ore particles of the second-stage cyclone is between-19 um.
7. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, characterized in that: the finished ore 1 is used as yellow phosphorus ore, and the finished ore 2 is used as acid method ore.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4393032A (en) * | 1982-01-12 | 1983-07-12 | Pennzoil Company | Production of phosphoric acid and additional products from phosphate ore |
| CN102489385A (en) * | 2011-12-12 | 2012-06-13 | 云南三明鑫疆矿业有限公司 | Combined technology of phosphorite scrubbing and direct floatation and reverse floatation |
| CN102671758A (en) * | 2012-05-16 | 2012-09-19 | 云南三明鑫疆矿业有限公司 | Direct and reverse flotation desliming process of collophanite |
| CN104261361A (en) * | 2014-09-11 | 2015-01-07 | 云南红富化肥有限公司 | Washing and direct flotation method of low-grade refractory argillaceous phosphorite |
| CN111375485A (en) * | 2018-12-29 | 2020-07-07 | 中蓝连海设计研究院有限公司 | Phosphate ore washing and grading separation method |
| CN112007747A (en) * | 2019-09-25 | 2020-12-01 | 中蓝连海设计研究院有限公司 | Flotation method for silicon-calcium collophanite without tailing pond |
-
2022
- 2022-03-28 CN CN202210312690.9A patent/CN114602645B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4393032A (en) * | 1982-01-12 | 1983-07-12 | Pennzoil Company | Production of phosphoric acid and additional products from phosphate ore |
| CN102489385A (en) * | 2011-12-12 | 2012-06-13 | 云南三明鑫疆矿业有限公司 | Combined technology of phosphorite scrubbing and direct floatation and reverse floatation |
| CN102671758A (en) * | 2012-05-16 | 2012-09-19 | 云南三明鑫疆矿业有限公司 | Direct and reverse flotation desliming process of collophanite |
| CN104261361A (en) * | 2014-09-11 | 2015-01-07 | 云南红富化肥有限公司 | Washing and direct flotation method of low-grade refractory argillaceous phosphorite |
| CN111375485A (en) * | 2018-12-29 | 2020-07-07 | 中蓝连海设计研究院有限公司 | Phosphate ore washing and grading separation method |
| CN112007747A (en) * | 2019-09-25 | 2020-12-01 | 中蓝连海设计研究院有限公司 | Flotation method for silicon-calcium collophanite without tailing pond |
Non-Patent Citations (2)
| Title |
|---|
| 李惠民: "浅谈滇池地区磷矿擦洗脱泥工艺", 化工矿山技术, no. 6, pages 52 - 53 * |
| 谭菲玲: "滇池风化磷矿擦洗脱泥装置述评", 化工矿山技术, vol. 24, no. 2, pages 46 - 49 * |
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