CN1114504C - Dry milling and blow separating process for gold cores and mill therefor - Google Patents
Dry milling and blow separating process for gold cores and mill therefor Download PDFInfo
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- CN1114504C CN1114504C CN99112220A CN99112220A CN1114504C CN 1114504 C CN1114504 C CN 1114504C CN 99112220 A CN99112220 A CN 99112220A CN 99112220 A CN99112220 A CN 99112220A CN 1114504 C CN1114504 C CN 1114504C
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Abstract
The present invention discloses a dry ore milling air classification process for gold ores and a mill, which belongs to the technical field of gold production and relates to a process and equipment for ore dressing during the process of gold production. The process is characterized in that green ores enter the mill for dry milling after being primarily crushed; simultaneously, the air classification is carried out according to the specific density and/or the fineness of ore grains after being milled; and ore grains containing gold are enriched. The mill is composed of a grinding mill and an analyzer, wherein an ore concentrate collector is installed on the mill body for collecting ore grains containing gold and separated by the analyzer. The process adopts dry ore milling, and simultaneously enriches the ore grains containing gold, so the process is simplified, and the enriched ore concentrate is a little. The mill is improved on the basis of the existing equipment, and has the advantages of easy manufacture and high process efficiency.
Description
Dry milling and blow separating process for gold cores and flour mill belong to the gold production technical field, relate to the grinding wind election process of ore in a kind of gold production process and the equipment of use thereof.
Gravity separation method, floatation are mainly adopted in ore dressing in the gold production process of prior art.Gravity separation method is in medium of movement (water), difference by ore particle proportion and granularity is carried out the method that sorting obtains concentrate, the equipment that needs can be jigging machine, shaking table, chute etc., and this beneficiation method mainly is suitable in gold dust ore dressing and the lode gold mine and reclaims the coarse gold of monomer separation; Floatation is to utilize the difference of mineral surfaces physicochemical properties to select the branch ore, thereby obtain a kind of method of concentrate, this method needs chemical agent and flotation device, it is most widely used a kind of beneficiation method, can handle the ore that particulate is contaminated, for the ore of composition complexity, floatation can obtain good effect; More than two kinds of methods need water mill and carry out ore dressing again after forming slurry, its accumulation rate is low, complex process, cost height, particularly floatation also need waste liquid is handled.
One of purpose of the present invention provides a kind of dry milling wind election process, two provide a kind of flour mill that is used for technology of the present invention, to improve the accumulation rate of mineral, reduce production costs, simplify technology, reduce and pollute.
Dry milling wind election process of the present invention is: raw ore is entered flour mill dry type grinding after coarse crushing, the order number of the ore particle behind the grinding is slightly larger than the order number of rusty gold goldc grains in the raw ore, with the ore particle behind the grinding, carry out selection by winnowing according to proportion and/or fineness, enrichment contains the gold mine grain, obtain concentrate, reclaim mine tailing simultaneously.
The used flour mill of the present invention is to improve to realize that promptly at the fuselage inwall of grinding machine, be installed with the concentrate gatherer of collection from fuselage inwall whereabouts ore particle, it is communicated with the storage ore deposit device that is installed in the fuselage outer wall by through hole on the basis of existing pendulum type ring roll pulverizer.
The structure of above-mentioned concentrate gatherer can be a sheet material, is installed in ring fuselage inwall, and the upper end is uncovered, is blanking port, and fuselage inwall and fixing is close in the lower end, has the through hole storage ore deposit device outer with being installed in fuselage to be communicated with.
Accompanying drawing is the structural representation of flour mill of the present invention
Describe the structure of flour mill of the present invention below in detail
It is (to go up marine products at existing pendulum type ring roll pulverizer, the equipment that is used for grinding land plaster etc.) improve on the basis and to realize, form by grinding machine and analytical engine, fuselage 1 bottom of sealing is a grinding machine, top is analytical engine, there is an air inlet 11 to be communicated with in the bottom of fuselage 1 with blower fan, grinding machine comprises grinding machine driving shaft 4, plum blossom frame 5, grinding roller 3, perching knife 2 and charging aperture 15, analytical engine comprises actuating unit 7, vane frame 10, blade 8 and back-up ring 9, one mine tailing outlet 13 is arranged in the top of fuselage 1, top at grinding machine, the fuselage inwall fixed installation concentrate gatherer 6 of the bottom of analytical engine, it is to be installed by the sheet material ring fuselage inwall of triangle or similar structures that this concentrate is received device 6, form cavity with the fuselage inwall, to collect concentrate, the bottom of cavity has the through hole storage ore deposit device 14 outer with being installed in fuselage to be communicated with, the sheet material upper end is concordant and uncovered, be blanking port, the lower end is close to fuselage 1 and is fixed on fuselage 1 inwall, the setting of the size that the upper end is uncovered, size according to ore particle behind the size of goldc grains in the raw ore and the grinding is set, and enters from the ore particle that analytical engine separates guaranteeing.
The concentrate gatherer 6 of this structure device ring fuselage 1 inwalls that are can be one or more identical or similar structures are installed, and during a plurality of installations, each all has through hole and stores up the ore deposit device and be communicated with.
Describe dry milling wind election process of the present invention below in detail
Dry milling wind election process of the present invention, be that ore grinding and selection by winnowing are carried out in flour mill simultaneously, promptly enter flour mill dry type grinding after with the raw ore coarse crushing with boulder crusher, the order number of ore particle is slightly larger than the order number of goldc grains in the raw ore behind the grinding, one air port that is communicated with blower fan is arranged at the bottom of flour mill, the fineness of the ore particle of intake after by grinding is determined, the ore particle that can will be slightly less than rusty gold order number in the raw ore blows to analytical engine, the ore particle that analytical engine can be passed through by the blade selection, after machine is selected by analysis, ore particle order number is discharged to the mine tailing recovery bin greater than the ore particle of rusty gold order number in the raw ore from the air outlet of analytical engine, and the order number is separated to the fuselage wall less than the ore particle of regulation order number by analytical engine, thereby enter the concentrate gatherer, select concentrate.
Order number with natural goldc grains in the raw ore is that the 180-200 order is that example illustrates technological parameter of the present invention, the original ore powder grinding rate is 210 purpose ore particles, intake is the 2300-2500 cubic meters per minute, making order count minimum is that 160 purpose ore particles can blow to analytical engine, and charging rate is the 80-100 kg/minute, and analytical engine is 600-700 rev/min, the order number is passed through greater than 200 purpose ore particles, enter tailing bin, energy guarantee fund's the rate of recovery is at 90-95% like this, and concentrate is the 3-5% (enrichment) of raw ore.
Because the present invention adopts the dry milling wind election process, has improved grinding efficiency, makes the abundant enrichment of raw ore, the content of the gold in the concentrate of enrichment accounts for more than 90% of raw ore, and the production cost of gold is reduced greatly, has reduced pollution simultaneously; Flour mill of the present invention can carry out ore grinding and ore dressing simultaneously, has both reduced processing step, improves bioaccumulation efficiency simultaneously.
Claims (4)
1, a kind of dry milling and blow separating process for gold cores is, raw ore is entered flour mill dry type grinding after coarse crushing, the order number of ore particle is slightly larger than the order number of goldc grains in the raw ore behind the grinding, with the ore particle behind the grinding, enter analytical engine and carry out selection by winnowing according to fineness, ore particle order number is discharged to the mine tailing recovery bin greater than the ore particle of rusty gold order number in the raw ore from the air outlet of analytical engine, and the order number is separated to the fuselage wall less than the ore particle of regulation order number by analytical engine, thereby enter the concentrate gatherer, select concentrate.
2, employed flour mill in a kind of dry milling and blow separating process for gold cores is made up of vertical grinder and analytical engine, it is characterized in that: at fuselage (1) inwall that vertical grinder is connected with analytical engine concentrate gatherer (6) is installed.
3, a kind of flour mill according to claim 2 is characterized in that: concentrate gatherer (6) is that the upper end of ring fuselage inwall installation is uncovered, and fuselage inwall and fixing sheet material are close in the lower end, through hole is arranged and be installed in the outer Chu Kuangqi (14) of fuselage to be communicated with.
4, according to claim 3 or 4 described a kind of flour mills, it is characterized in that: concentrate gatherer (6) is device ring fuselage (1) the inwall fixed installation of one or more triangular structures or similar structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112220A CN1114504C (en) | 1999-05-14 | 1999-05-14 | Dry milling and blow separating process for gold cores and mill therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99112220A CN1114504C (en) | 1999-05-14 | 1999-05-14 | Dry milling and blow separating process for gold cores and mill therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1235069A CN1235069A (en) | 1999-11-17 |
| CN1114504C true CN1114504C (en) | 2003-07-16 |
Family
ID=5275547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99112220A Expired - Fee Related CN1114504C (en) | 1999-05-14 | 1999-05-14 | Dry milling and blow separating process for gold cores and mill therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1114504C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462450C (en) * | 2007-07-06 | 2009-02-18 | 中国黄金集团公司技术中心 | Process for dry type ore grinding employing vertical roller mill |
| CN105855028A (en) * | 2016-05-13 | 2016-08-17 | 芜湖飞尚非金属材料有限公司 | Raymond machine capable of removing impurities |
| CN107971093A (en) * | 2017-11-21 | 2018-05-01 | 王俊哲 | A kind of layered filtration reducing mechanism |
| CN111940125B (en) * | 2020-07-30 | 2022-04-12 | 中陕核工业集团综合分析测试有限公司 | Method and system for recovering precious metals in low-grade gold tailings |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046685A (en) * | 1989-04-29 | 1990-11-07 | 依莱宝采矿设备有限公司 | Mineral are pulverized and retracting device |
-
1999
- 1999-05-14 CN CN99112220A patent/CN1114504C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046685A (en) * | 1989-04-29 | 1990-11-07 | 依莱宝采矿设备有限公司 | Mineral are pulverized and retracting device |
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| Publication number | Publication date |
|---|---|
| CN1235069A (en) | 1999-11-17 |
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