CN114602645B - Collophanite pre-screening scrubbing desliming combined treatment method - Google Patents
Collophanite pre-screening scrubbing desliming combined treatment method Download PDFInfo
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- CN114602645B CN114602645B CN202210312690.9A CN202210312690A CN114602645B CN 114602645 B CN114602645 B CN 114602645B CN 202210312690 A CN202210312690 A CN 202210312690A CN 114602645 B CN114602645 B CN 114602645B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000012216 screening Methods 0.000 title claims abstract description 32
- 238000005201 scrubbing Methods 0.000 title claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 29
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000002367 phosphate rock Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 13
- 235000014483 powder concentrate Nutrition 0.000 abstract description 8
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 12
- 229910019142 PO4 Inorganic materials 0.000 description 9
- 239000010452 phosphate Substances 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 9
- 235000008504 concentrate Nutrition 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
- 230000005611 electricity Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration 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 group C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
Abstract
The invention discloses a collophanite pre-screening scrubbing desliming combined treatment method, and relates to the technical field of collophanite scrubbing desliming. Pre-screening the collophanite raw ore which is crushed preliminarily by a screening device, scrubbing and desliming the oversize material in a ore washer, and selling the undersize material as finished ore 2 after ore blending; the overflow fine ore of the ore washer enters a cyclone for classification desliming, and the block ore after the bottom scrubbing desliming enters a secondary screening desliming procedure; after the lump ore is graded by a linear sieve, the lump ore of the upper layer sieve enters a crusher to be crushed and is used as finished ore to be sold after being matched with the lump ore of the lower layer sieve as finished ore 2; the ore particles of the intermediate screen are used as finished ore 1; the powder ore enters a first-stage cyclone to carry out classification desliming, the overflow enters a second-stage cyclone to carry out classification desliming again, the underflow powder concentrate products of the first-stage cyclone and the second-stage cyclone are combined and then filtered and dehydrated to obtain powder concentrate, and a large amount of powder ore is prevented from entering a ore washer, so that the problem of pulp diffusion of the ore washer and a sand pump is avoided.
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 ore washer and a cyclone are often used for scrubbing and desliming, and then the yellow phosphorite and the acid method ore are produced. The scrubbing desliming process is adopted to remove the mud content in the ore, reduce the sesqui in the phosphate ore, obtain the phosphate ore with better quality, and effectively improve the phosphate ore grade by 1 to 1.5 percent. However, the process requires high phosphate rock granularity, and the proportion of the fine ore with the particle size of-4 mm in the phosphate rock is less than 30%. In recent years, with the increase of the-4 mm powder ore quantity in the extracted phosphate ore, a series of problems are brought about by adopting the existing scrubbing desliming process: the powder ore passing through the ore washer has small granularity and strong adhesiveness, so that the ore washer and a sand pump are subjected to pulp diffusion, the loads of a cyclone and a filter are increased, the hour yield of a factory 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 increase of the powder ore content in the existing scrubbing and desliming process.
In order to solve the technical problems, the invention adopts the following technical scheme: the collophanite pre-screening, scrubbing and desliming combined treatment method is characterized by comprising the following steps of:
s1, pre-screening the collophanite raw ore which is crushed preliminarily by a screening device, scrubbing and desliming oversize materials with the length of +15mm in a ore washer, and selling the undersize materials with the length of-15 mm serving as finished ore 2 after ore blending;
s2, enabling overflow fine ore of the ore washer to enter a cyclone for classification desliming, and enabling lump ore subjected to bottom scrubbing desliming to enter a secondary screening desliming process;
s3, after the lump ore is graded by a linear sieve, the lump ore of the upper layer sieve enters a crusher to be crushed and is used as finished ore to be sold after being matched with the lump ore of the lower layer sieve as finished ore 2; the ore particles of the intermediate screen are used as finished ore 1;
s4, in the step S2, the powder ore enters a first-stage cyclone for classification desliming, overflow enters a second-stage cyclone for classification desliming again, the underflow powder concentrate products of the first-stage cyclone and the second-stage cyclone are combined, and then the powder concentrate with the water content of less than 18% is obtained after filtering and dewatering, and is used as finished ore 2, and the overflow of the second-stage cyclone is used as tailings.
The further technical scheme is that the proportion of the-4 mm grain grade product to the +4mm grain grade product in the collophanite raw ore in the step S1 is more than 30:70.
the further technical proposal is that the screen gap of the overflow screen of the ore washer is 4mm.
The further technical scheme is that in the step S3, the ore particle diameter of the upper layer sieve block is +50mm, the ore particle diameter of the middle sieve is +30mm to-50mm, and the ore particle diameter of the lower layer sieve block is-30mm.
The further technical proposal is that the grain diameter of the crushed upper layer sieve in the step S3 is minus 30mm.
The further technical scheme is that the particle size of the underflow ore particles of the first-stage cyclone in the step S4 is +74um to-4 mm, the particle size of the underflow ore particles of the second-stage cyclone is +19um to-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 ore 1 is used as yellow phosphorite, and the finished 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 and desliming combined treatment method is provided, the-15 mm is directly screened out through the pre-screening step to be treated as finished ore, the recycling of low-grade fine ore is realized through ore blending, and the waste of mineral resources is reduced. Only +15mm raw ore enters the ore washer to scrub and desliming, so that a large amount of fine ore is prevented from entering the ore washer, the problem of pulp diffusion of the ore washer and a sand pump is avoided, and meanwhile, the load of the ore washer is reduced, and the yield is improved. The overflow after scrubbing and desliming is recycled after being classified by the cyclone twice, a part of the agglomerate is recycled after being screened again, a part of the agglomerate is crushed and then is directly used as finished ore with a lower screen, the intermediate screen is used as another finished ore, and the finished ore is classified differently according to the particle size by the screening measures, so that ore blending and use in the subsequent working procedures are facilitated.
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 further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Figure 1 shows a collophanite pre-screening, scrubbing and desliming combined treatment method,
and (3) the collophanite raw ore after preliminary crushing enters a pre-screening process, a screening device is used for screening, lump ore larger than 15mm enters a ore washer for primary scrubbing and desliming, and powder ore smaller than 15mm is directly transported into a finished ore 2 by a tape machine to wait for ore proportioning and sales.
Wherein, the screen gap of the overflow screen of the ore washer is 4mm, and after the ore washer scrubs the lump ore with the particle size of +4mm, the lump ore enters the secondary screening desliming procedure and is screened by using a linear screen. The larger ore with the upper layer sieve plus 50mm enters a crusher, is crushed into a product with the granularity of-30 mm, and becomes a finished ore 2 to be sold after ore blending; the intermediate screen and the lump ore with granularity of 30mm to-50 mm become finished ore 1; the lump ore with the lower layer of screen-30 mm is formed into finished ore 2 to be sold after being matched.
Scrubbing fine ore with the particle size smaller than 4mm by a ore washer, and enabling the fine ore to overflow into a hydrocyclone along with the ore washer to carry out classification desliming. Wherein, the overflow of the ore washer enters a first-stage cyclone for classification desliming, the overflow of the first-stage cyclone enters a second-stage cyclone for classification desliming again, the overflow of the second-stage cyclone becomes final tailings, and the underflow of the first-stage cyclone and the underflow of the second-stage cyclone are combined and enter a filter and a dewatering screen for concentrate dewatering operation.
Wherein, -4mm powder ore pulp enters a first section 350mm cyclone to carry out classified desliming, +74um to-4 mm particle size powder concentrate products are recovered, overflow enters a second section 125mm cyclone to carry out classified desliming again, and +19um to-74 mm particle size concentrate products are recovered. And after the underflow powder concentrate products of the two-stage cyclone are combined, the combined products enter a filter and a dewatering screen to obtain powder concentrate with the water content of less than 18%, and the powder concentrate becomes finished ore 2 to wait for ore blending and selling. The overflow of the two-stage cyclone, i.e. the fine fraction product smaller than 19um, becomes tailings.
The above-mentioned finished ore 2 as acid-process ore contains-15 mm (undersize ore in pre-screening), -30mm (crushed upper screen and lower screen material in straight line screen), - +19um to-4 mm (concentrate after the underflow in primary and secondary cyclones is combined). The finished ores with the particle sizes are mixed according to a certain proportion according to the requirements of manufacturers to prepare ores, so that the weighted quality reaches the requirements of the manufacturers and then the ores are directly sold.
The finished ore 1 is yellow phosphorite, the main granularity is +30mm to-50 mm, the yellow phosphorite is required to be provided by factories, and the finished ore 1 can be not produced and only the finished ore 2 can be produced when the yellow phosphorite is not produced.
Under the condition of the same nature and the same powder ore proportion of the selected phosphate ore, the phosphate ore is treated by the pre-screening, scrubbing and desliming combined treatment method in the invention as shown in figure 1, the treatment method after the step S1 is omitted in the comparison process, the two are subjected to comparison tests, 43 shifts are produced together, and the production results are shown in table 1.
TABLE 1 comparison of the inventive process with the original process production data
| Project | Contrast process | The process of the invention | Contrast cases |
| Hourly production | 319.84 | 375.4 | Increase by 55.56t/h |
| Water consumption per hour | 190.89 | 151.56 | Reduction of 39.33m3 |
| Power consumption per hour | 652.78 | 550.38 | Reduction of 102.4kwh |
According to the comparison condition of the production data, the process is used for production comparison with a comparison process: the hour yield of ore produced by the process is increased by 55.56t/h; the water consumption per hour is reduced by 39.33m 3 The electric consumption per hour is reduced by 102.4kwh, so that the pre-screening step of the step S1 is added, the yield can be improved, and the energy consumption can be reduced.
The process was carried out by the combined pre-screening, scrubbing and desliming treatment method of the invention as shown in fig. 1, and phosphate ores with different powder ore proportions were used, and the production test results are shown in table 2.
TABLE 2 comparison of production data of phosphate Ores with different powder ore ratios
| Ratio of fine ore (-4 mm) to lump ore (+4 mm) | Hourly throughput (t/h) | Consumption of electricity per hour (kwh/h) | Water consumption per hour(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 |
From the production data it is seen that: when the ratio of the fine ore (-4 mm) to the lump ore (+4 mm) is 69.93:30.07, the increase of the hourly processing capacity is maximum, the hourly power consumption and the water consumption are reduced most, the hourly output of a factory can be effectively improved, the water and power consumption is reduced, and the hourly output is improved. In conclusion, along with the increase of the (-4 mm) proportion of the powder ore in the selected phosphate ore, the process has stronger applicability, the more the hour treatment capacity of a factory is increased, the more the hour water and electricity consumption is reduced, and the higher the production efficiency is.
In conclusion, the collophanite pre-screening, scrubbing and desliming combined treatment method provided by the invention has the advantages that when the phosphorite with higher powder ore content is produced, the production efficiency is improved, the production cost is reduced, and the application value is higher.
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 herein. More specifically, various variations and modifications may be made to the component parts or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims of this application. In addition to variations and modifications in the component parts or arrangements, other uses will be apparent to those skilled in the art.
Claims (4)
1. The collophanite pre-screening, scrubbing and desliming combined treatment method is characterized by comprising the following steps of:
s1, pre-screening the collophanite raw ore which is crushed preliminarily by a screening device, scrubbing and desliming oversize materials with the length of +15mm in a ore washer, and selling the undersize materials with the length of-15 mm serving as finished ore 2 after ore blending; the proportion of the-4 mm grain grade product and the +4mm grain grade product in the collophanite raw ore is more than 30:70; the screen gap of the overflow screen of the ore washer is 4mm;
s2, enabling overflow fine ore of the ore washer to enter a cyclone for classification desliming, and enabling lump ore subjected to bottom scrubbing desliming to enter a secondary screening desliming process;
s3, after the lump ore is graded by a linear sieve, the lump ore of the upper layer sieve enters a crusher to be crushed and is used as finished ore to be sold after being matched with the lump ore of the lower layer sieve as finished ore 2; the ore particles of the intermediate screen are used as finished ore 1;
s4, the fine ore in the step S2 enters a first-stage cyclone for classification desliming, overflow enters a second-stage cyclone for classification desliming again, the underflow fine ore products of the first-stage cyclone and the second-stage cyclone are combined and filtered and dehydrated to obtain fine ore with the water content less than 18%, the fine ore is used as finished ore 2, and the overflow of the second-stage cyclone is used as tailings; the particle size of the underflow ore particles of the first-stage cyclone is +74 mu m to-4 mm, the particle size of the underflow ore particles of the second-stage cyclone is +19 mu m to-74 mm, and the particle size of the overflow ore particles of the second-stage cyclone is-19 mu m.
2. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, wherein: in the step S3, the ore particle diameter of the upper layer screen block is +50mm, the ore particle diameter of the middle screen is +30mm to-50mm, and the ore particle diameter of the lower layer screen block is-30mm.
3. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, wherein: and in the step S3, the particle size of the crushed upper layer sieve is-30 mm.
4. The collophanite pre-screening, scrubbing and desliming combined treatment method as set forth in claim 1, wherein: the finished ore 1 is used as yellow phosphorite, and the finished ore 2 is used as acid method ore.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210312690.9A CN114602645B (en) | 2022-03-28 | 2022-03-28 | Collophanite pre-screening scrubbing desliming combined treatment method |
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| CN202210312690.9A CN114602645B (en) | 2022-03-28 | 2022-03-28 | Collophanite pre-screening scrubbing desliming combined treatment method |
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| CN114602645B true CN114602645B (en) | 2024-01-26 |
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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 |
|---|
| 浅谈滇池地区磷矿擦洗脱泥工艺;李惠民;化工矿山技术(第6期);52-53 * |
| 滇池风化磷矿擦洗脱泥装置述评;谭菲玲;化工矿山技术;第24卷(第2期);46-49 * |
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