CN104001370A - Dry discharge technology of tailings - Google Patents
Dry discharge technology of tailings Download PDFInfo
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- CN104001370A CN104001370A CN201410234941.1A CN201410234941A CN104001370A CN 104001370 A CN104001370 A CN 104001370A CN 201410234941 A CN201410234941 A CN 201410234941A CN 104001370 A CN104001370 A CN 104001370A
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- mine tailing
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Abstract
The invention relates to a dry discharge technology of tailings, belonging to the technical field of tailing disposal. The dry discharge technology of the tailings has the technical scheme that a cyclone and a dewatering screen are used for discharging the coarse particles of the tailings with the particle sizes of more than 0.074mm in a dried way, a thickener is used for concentrating the fine particles with the particle sizes of less than 0.074mm, and the separated coarse particles and fine particles are mixed again by a mixer, so that the tailings with uniform particle size can be discharged. The dry discharge technology of the tailings has the beneficial effects that the influence of pollution such as blowing sand and dust to the environment caused by separately stacking the fine particles in the traditional dry discharge technology can be effectively improved, the flow process equipment can be effectively simplified, the running cost is lowered, the flow process data is flexible to adjust, and the comprehensive utilization efficiency of the tailings can be improved.
Description
Technical field
The present invention relates to a kind of tailing dry-type emission technology, belong to mine tailing processing technology field.
Background technology
At present, in the tailing dry-type emission technology of background technology, if reach identical moisture content, the processing cost of fine fraction part is 3-4 times of coarse fraction part; If use concentrator all to process the technique of mine tailing, there is the shortcoming that operating cost is high.Background technology is isolated most coarse fraction mine tailings by cyclone in advance from mine tailing, use the dry row of dewatering screen, re-use concentrator and filter press and process fine fraction part, its moisture content is reached more than 80%, operating cost is still very high, and device category is many, trouble point is many, and maintenance cost is high.Somebody utilizes the mine of mine tailing filling, and the mine tailing that water content is less than to 20% still needs to add therein water, therefore causes the waste of the energy.
Summary of the invention
The flow data adjustment such as the object of the invention is to provide a kind of tailing dry-type emission technology, and effectively simple flow equipment, reduces operating cost, dry row's tailings concentration are flexible, improve the comprehensive utilization ratio of mine tailing, solve the problem existing in background technology.
Technical scheme of the present invention is:
A kind of tailing dry-type emission technology, by cyclone and dewatering screen, mine tailing granularity is greater than to 0.074mm coarse granule and does row, by concentrator, to being less than 0.074mm fine grained, concentrate, by batch mixer, the coarse granule after separation and fine grained are mixed again, realize the uniform particle size discharge of mine tailing; Concrete steps are as follows:
1. Tailings Slurry is concentrated through cyclone, by adjusting cyclone inlets pressure (p), overflow caliber (d
0), underflow tap diameter (du), fineness-200 order content is greater than to 90% mine tailing and discharges by overflow, be called fine grained, all the other mine tailings are discharged by underflow, are called coarse granule;
The coarse granule of 2. discharging by underflow enters dewatering screen, discharges moisture content < 18%(mass percent on sieve) dry mine tailing; The lower particle mine tailing (200 order fineness 40-70%) of sieve is called the lower particle of sieve, and the fine grained that the lower particle of sieve and cyclone overflow is referred to as separating material, and separating material enters in the lump concentrator and carries out Separation of Solid and Liquid;
3. concentrator overflow clear water re-uses as backwater;
4. thickener underflow ore pulp mixes by batch mixer with the upper dry mine tailing of discharging of sieve, discharges the dry mine tailing after processing.
According to the upper moisture content of dry mine tailing and the water yield difference of finally mixing rear dry mine tailing moisture content of discharging of discharging of sieve, determine the water yield that thickener underflow need to be discharged, according to the quality that enters the separating material of concentrator, will need the water yield to be converted to the concentration that needs of thickener underflow ore pulp.
According to the quality that enters the separating material of concentrator, by adjusting the addition of concentrator medicament, control the sedimentation time of separating material in concentrator, obtain meeting the thickener underflow ore pulp of thickener underflow needs concentration.
The thickener underflow ore pulp of the concentration that suits the requirements is mixed into batch mixer with the upper dry last person of sieve ore deposit, obtains the piling tails of concentration > 75%, and the water in dry last person ore deposit now can not separated out, and meets the requirement of tailing dry-heaping.
The invention has the beneficial effects as follows: effectively improved conventional dry row technique fine grained and stacked separately, the impact that causes sand, dust etc. to pollute on environment, effectively simple flow equipment, reduces operating cost, flow data adjustment is flexible, improves the comprehensive utilization ratio of mine tailing.
Accompanying drawing explanation
Fig. 1 is process schematic representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
In an embodiment, on-the-spot mine tailing amount is 20t/h, concentration 15% ,-200 order content 30%, ore proportion 3.0t/m
3.Processing step is as follows:
1. cyclone is selected FX350 model, by adjusting parameter, cyclone inlets pressure (p=0.1-0.12MPa), overflow caliber (d
0=100-120mm), underflow tap diameter (du=50-60mm), 4-5 ton mine tailing per hour is entered to concentrator by cyclone overflow;
2. with 15-16 ton/hour speed, mine tailing is by dewatering screen, the dry mine tailing of 14 tons of moisture content 20% of discharge from sieving, therefore, moisture 3.5 tons of 14 tons of dry mine tailings;
3. the treating capacity of concentrator, at 6 tons of separating materials, by adjusting concentrator additive amount of medicament, is controlled at 65%-70% underflow density, so the moisture 2.5-3.2 ton of this part separating material;
4. thickener underflow ore pulp enters after batch mixer together with the upper dry mine tailing of discharging of sieve, reaches the dry mine tailing of mixing of 75% left and right, meets the requirement of actual dry heap.
Claims (1)
1. a tailing dry-type emission technology, it is characterized in that by cyclone and dewatering screen, mine tailing granularity being greater than to 0.074mm coarse granule does row, by concentrator, to being less than the fine grained of 0.074mm, concentrate, by batch mixer, the coarse granule after separation and fine grained are mixed again, realize the uniform particle size discharge of mine tailing; Concrete steps are as follows:
1. Tailings Slurry is concentrated through cyclone, by adjusting cyclone inlets pressure, overflow caliber, underflow tap diameter, fineness-200 order content is greater than to 90% mine tailing and discharges by overflow, is called fine grained, and all the other mine tailings are discharged by underflow, are called coarse granule;
The coarse granule of 2. discharging by underflow enters dewatering screen, discharges the dry mine tailing of moisture content < 18% on sieve; The lower particle mine tailing of sieve is called the lower particle of sieve, and the fine grained that the lower particle of sieve and cyclone overflow is referred to as separating material, and separating material enters in the lump concentrator and carries out Separation of Solid and Liquid;
3. concentrator overflow clear water re-uses as backwater;
4. thickener underflow ore pulp mixes by batch mixer with the upper dry mine tailing of discharging of sieve, discharges the dry mine tailing after processing;
According to the upper moisture content of dry mine tailing and the water yield difference of finally mixing rear dry mine tailing moisture content of discharging of discharging of sieve, determine the water yield that thickener underflow need to be discharged, according to the quality that enters the separating material of concentrator, will need the water yield to be converted to the concentration that needs of thickener underflow ore pulp;
According to the quality that enters the separating material of concentrator, by adjusting the addition of concentrator medicament, control the sedimentation time of separating material in concentrator, obtain meeting the thickener underflow ore pulp of thickener underflow needs concentration;
The thickener underflow ore pulp of the concentration that suits the requirements is mixed into batch mixer with the upper dry last person of sieve ore deposit, obtains the piling tails of concentration > 75%, meets the requirement of tailing dry-heaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234941.1A CN104001370A (en) | 2014-05-30 | 2014-05-30 | Dry discharge technology of tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410234941.1A CN104001370A (en) | 2014-05-30 | 2014-05-30 | Dry discharge technology of tailings |
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| CN104001370A true CN104001370A (en) | 2014-08-27 |
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| CN201410234941.1A Pending CN104001370A (en) | 2014-05-30 | 2014-05-30 | Dry discharge technology of tailings |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399354A (en) * | 2015-12-04 | 2016-03-16 | 山东科技大学 | Method for zero emission production of gold mine tailings |
| CN105903555A (en) * | 2016-04-14 | 2016-08-31 | 山东鑫海矿业技术装备股份有限公司 | Tailings dry-type deslagging method employing swirlers in combination |
| CN105903556A (en) * | 2016-04-14 | 2016-08-31 | 山东鑫海矿业技术装备股份有限公司 | Energy-efficient tailings dry-type deslagging technique |
| CN112453005A (en) * | 2020-09-28 | 2021-03-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Dry-type micro-fine-particle tailing disposal method for arid and windy areas |
| CN113840808A (en) * | 2019-05-24 | 2021-12-24 | 淡水河谷公司 | Method for dry heaping tailings in iron ore beneficiation process |
| CN114642919A (en) * | 2022-03-25 | 2022-06-21 | 蔡静 | Solid-liquid separation system and process for tail salt liquid generated in production of potash fertilizer from carnallite |
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| CN101734809A (en) * | 2009-12-18 | 2010-06-16 | 吴爱华 | Efficient tailing dry-type emission technology with low energy consumption |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399354A (en) * | 2015-12-04 | 2016-03-16 | 山东科技大学 | Method for zero emission production of gold mine tailings |
| CN105903555A (en) * | 2016-04-14 | 2016-08-31 | 山东鑫海矿业技术装备股份有限公司 | Tailings dry-type deslagging method employing swirlers in combination |
| CN105903556A (en) * | 2016-04-14 | 2016-08-31 | 山东鑫海矿业技术装备股份有限公司 | Energy-efficient tailings dry-type deslagging technique |
| CN113840808A (en) * | 2019-05-24 | 2021-12-24 | 淡水河谷公司 | Method for dry heaping tailings in iron ore beneficiation process |
| CN112453005A (en) * | 2020-09-28 | 2021-03-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Dry-type micro-fine-particle tailing disposal method for arid and windy areas |
| CN114642919A (en) * | 2022-03-25 | 2022-06-21 | 蔡静 | Solid-liquid separation system and process for tail salt liquid generated in production of potash fertilizer from carnallite |
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Application publication date: 20140827 |