CN1962074A - Column type short-stage tungseten crude grading process and equipment - Google Patents
Column type short-stage tungseten crude grading process and equipment Download PDFInfo
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- CN1962074A CN1962074A CN 200610097752 CN200610097752A CN1962074A CN 1962074 A CN1962074 A CN 1962074A CN 200610097752 CN200610097752 CN 200610097752 CN 200610097752 A CN200610097752 A CN 200610097752A CN 1962074 A CN1962074 A CN 1962074A
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Abstract
The invention relates to a post-type tungsten selecting method, wherein it uses two cyclone-static foam float selecting posts as selecting devices, with three slurry barrels, liquid level controller and mine circulator. It first feeds the mine into slurry barrel, adds float select agent to mix the slurry; feeds the slurry via feeding pump to the rough float selecting post to be separated and selected; then the rough selected and fine selected mines flow into the fine selecting float selecting post, and the rough selected mine is discharge at the bottom of rough selecting float selecting post, to be selected in the fine selecting post; and the fine selected mine is discharged at the upper fine mine outlet, and the tail mine is discharge at the bottom outlet into mine buffer pool, to be fed back to the slurry barrel. The invention has low cost and high efficiency.
Description
Technical field
The present invention relates to the tungsten mineral floatation process, be particularly useful for the short flow process sorting of black and white tungsten bulk flotation.
Technical background
The tungsten resource of China is extremely abundant, and tungsten ore reserves and exploitation scale all occupy first place in the world.The tungsten mineral of having found at present has kind more than 20, wherein the industrial value maximum is wolframite and scheelite, the multiple valuable mineral of they normal associations as: bismuthine, brightness aluminium ore, pyrite, magnetic iron ore, cassiterite etc., gangue mineral is fluorite, garnet, calcite, quartz, feldspar etc. normally.Symbiosis is tight usually between tungsten mineral and other mineral, embedding cloth is thin and uneven, the floatability that adds multiple gangue mineral and tungsten mineral is close, and the flotability between the black and white tungsten differs greatly, corresponding flotation conditions has nothing in common with each other, therefore be difficult to determine that rational mog and sorting process obtain various desirable products, have caused the ore dressing difficulty of China's tungsten mineral.
At present, domestic research for the tungsten ore dressing mainly concentrates on two aspects of floating agent and Research on Flotation.Collecting agent in the floating agent mainly comprises aliphatic acid, sulfonic acid class, arsenic acid class, phosphoric acid class, amine collector and chelating collecting agent etc., and adjusting agent has plumbi nitras, ferrous sulfate, NaOH, modified water glass, calgon etc.The research of tungsten floatation process mainly contains the floatation process of heating, " lime method " technology, " 731 " the normal temperature method technology that is used for white tungsten, the carrier flotation, the flotation of selectivity Shear flocculation etc. that are used for black tungsten are applicable to the technology of fine particles flotation, and be used for black and white tungsten mixed floating GY method and CF method flotation tungsten technology, wherein outstanding with the floating tungsten technology of the GY method that obtains multinomial scientific achievement.This technology adopts lead salt to activate tungsten mineral first, carries out the mixing of black and white tungsten with chelating collecting agent GY and roughly selects, and improves the grade that tungsten is roughly selected concentrate, and is follow-up heat selected operation and the favourable sorting condition of black tungsten slurry recovery creation.But progressively poor along with tungsten ore resource in recent years adds that the user is more and more higher to the requirement of tungsten product, and GY method flotation tungsten technology also shows its weak point gradually especially: 1) selected operating efficiency and concentration ratio are low.Although adopt the selected operation of multistage flotation device, but still be difficult to obtain stay-in-grade concentrate; 2) the reagent consumption amount is big.Suppress gangue mineral because this arts demand adds a large amount of waterglass, add a lot of collecting agents again for the rate of recovery that guarantees the purpose mineral simultaneously, on-the-spot " suppress and hale " flotation mode that adopts usually that Here it is has finally caused dosing bigger; 3) energy consumption height.It is longer that this is mainly reflected in flotation process, and the platform number of flotation device is more, and in today more and more higher to energy-conservation requirement, it is bigger that power consumption also just seems, and equipment is under the condition of overload operation, and power consumption is bigger, fault rate is high.Therefore, adopt more the advanced person efficiently method for separating and means to handle tungsten ore imperative.
Summary of the invention
In view of the problem that original technology exists, the purpose of this invention is to provide that a kind of work simplification, complete sets of equipment, investment saving, operating cost are low, concentrate grade and high column type short-stage tungseten crude grading process and the equipment of the rate of recovery.
Column type short-stage tungseten crude grading process of the present invention is roughly selected and selected three parts of post are formed by slurry preparation, post, and its step is as follows:
A. tungsten is roughly selected raw ore and fed first mixing cirtern, add activator simultaneously, ore pulp enters next mixing cirtern after sizing mixing, and adds inhibitor continuation stirring, then enter the 3rd mixing cirtern again, and add collecting agent therein and continue to stir and to be prepared into floatation feed;
B. floatation feed be delivered to roughly select the flotation column FLOTATION SEPARATION with roughly selecting feed pump, roughly select concentrate by the discrepancy in elevation of roughly selecting flotation column and selected flotation column from flowing into selected flotation column; Rougher tailings is discharged from roughly selecting flotation column bottom mine tailing mouth;
C. roughly select concentrate further sorting in selected flotation column, selected concentrate flows out from the outlet of selected flotation column top concentrate hopper; Cleaner tailings flows into the chats Buffer Pool from selected flotation column bottom mine tailing mouth, and the ore pulp in the Buffer Pool returns pump by chats and is delivered to and roughly selects mixing cirtern, enters tungsten once more and roughly selects operation.
Described activator is a plumbi nitras, and inhibitor adopts waterglass, and collecting agent adopts the chelating collecting agent; The mixing time of ore pulp in mixing cirtern is 10～15 minutes, and the mass percent concentration of ore pulp is 30～50%.
Column type short-stage tungseten crude grading equipment of the present invention comprises mixing cirtern, flotation column, tank level control system and the chats circulatory system.Described mixing cirtern is provided with three, and three mixing cirterns are arranged by discrepancy in elevation ladder and communicated; Described flotation column is divided into roughly selects two of flotation column and selected flotation columns; Roughly selecting flotation column and selected flotation column is height and arranges in turn and communicate; Roughly select flotation column and be connected with mixing cirtern, between be provided with and roughly select feed pump; Selected flotation column has the chats Buffer Pool, and the chats Buffer Pool returns pump by chats and links to each other with mixing cirtern; Described tank level control system is made of electric control valve, pressure sensor, PID controller and centralized Control cabinet; The described chats circulatory system is made of circulating pump, bubble generator, wear-resisting mozzle and Pressure gauge.
The present invention adopts eddy flow-static microbubble floatation column as floatation equipment thick, selected operation, and be equipped with corresponding slurry preparation, liquid automatic control system and the chats circulatory system, form column type short-stage tungseten crude grading process, obtaining under qualified final concentrate and the product from failing prerequisite, improving the rate of recovery and concentrate grade that tungsten is roughly selected.
This technology and original tungsten are roughly selected the advantage that the flotation device process system compares and are mainly contained:
1) separation index excellence.The leading indicator of producing with flotation device contrasts as following table:
Table 1 column type short-stage tungseten crude grading process and flotation device technology leading indicator contrast table
| System | Raw ore | Concentrate | Mine tailing | The rate of recovery, % | |||
| Grade, % | Productive rate, % | Grade, % | Productive rate, % | Grade, % | Productive rate, % | ||
| The flotation device flotation column | 0.443 0.436 | 100.00 100.00 | 9.02 13.01 | 3.67 2.52 | 0.116 0.111 | 96.33 97.48 | 74.78 75.18 |
By hanging down under the situation at head grade more as can be seen, flotation column has exceeded 4 percentage points than the concentrate grade of flotation device, has fully shown the characteristics that selectivity is good, concentration ratio is high of eddy flow-static microbubble floatation column.Can be found out also by table 1 simultaneously that one section one thick three rate of recovery of sweeping gained of roughly selecting alternative flotation device of flotation column is higher 0.4 percentage point than flotation device, this helps to reduce the metal flow vector that tungsten is roughly selected operation, improves the effect of utilizing of tungsten resource.
2) production cost is low.Table 2 and table 3 are respectively the medicine consumption comparison sheet and the device parameter comparison sheet of column type short-stage tungseten crude grading process and flotation device technology:
Table 2 column type short-stage tungseten crude grading process and flotation device technology reagent consumption comparison sheet
| System | Plumbi nitras, g/t | Waterglass, kg/t | Aluminum sulfate, g/t | GYB，g/t | GYR，g/t |
| The flotation device flotation column | 439.9 475.0 | 4.5 3.1 | 886.8 630.2 | 321.1 318.1 | 111 37 |
Table 3 column type short-stage tungseten crude grading process and flotation device process equipment parameter comparison sheet
| System | Flow process | Equipment | Dischargeable capacity m 3 | Installed power Kw | Real wasted work rate kw |
| The flotation column flotation device | One thick one single-minded thick three sweeps two essences | Φ 3600 * 8000 Ф 3200 * 8,000 18 groove JJF-8 | 119 144 | 367 511.5 | 247.02 365.52 |
By table 2 result as can be seen, except that plumbi nitras slightly increased, other dosing all had the consumption of minimizing, particularly aluminum sulfate and GYR that reduction is significantly arranged, and presses persimmon bamboo plantation company medicament calculation of price in 2005, can save reagent cost every year more than 300,000 yuan.Also can find out by table 3, eddy flow-static microbubble floatation column tungsten is roughly selected technology and has not only been simplified tungsten and roughly select work flow, help operation, and power consumption reduces significantly, select the production capacity of factory and 0.45 yuan/kwh of production electricity price to calculate by kiloton, annual power consumption cost saving is more than 300,000 yuan.
Description of drawings
Fig. 1 is a sorting process FB(flow block) of the present invention.
Fig. 2 is a screening installation system diagram of the present invention.
Among the figure: mixing cirtern 1, mixing cirtern 2, mixing cirtern 3, roughly select feed pump 4, floatation feed mouth 5 is roughly selected concentrate hopper outlet 6, bubble generator 7 is roughly selected flotation column 8, roughly selects circulating pump 9, rougher tailings mouth 10, selected flotation column inlet 11, selected concentrate hopper outlet 12, selected flotation column 13, selected circulating pump 14, cleaner tailings mouth 15, chats Buffer Pool 16, chats return pump 17, pipeline 18; Raw ore A, activator B, inhibitor C, collecting agent D, collecting agent E roughly selects concentrate F, rougher tailings G, selected concentrate H, cleaner tailings I.
The specific embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
Shown in Fig. 1,2, column type short-stage tungseten crude grading process of the present invention, tungsten is roughly selected raw ore A feed mixing cirtern 1, add plumbi nitras activator B (the plumbi nitras consumption is about 450g/t) simultaneously, ore pulp enters mixing cirtern 2 after sizing mixing, and adding waterglass inhibitor C (the waterglass consumption is about 3000g/t) continues to stir, then ore pulp enters mixing cirtern 3, and add the chelating collecting agent that code name is GYB and GYR (the GYB consumption is about 300g/t, and the GYR consumption is about 40g/t) continuation stirring therein and size mixing.Raw ore is after mixing cirtern continues to stir 10～15 minutes, obtain mass concentration and be 30～50% floatation feed, floatation feed is delivered to and roughly selects flotation column feeding mouth 5 by roughly selecting feed pump 4, proceeds to and roughly selects in the flotation column 8, carries out sorting roughly selecting under circulating pump 9 and bubble generator 7 effects.Rougher tailings G discharges from the rougher tailings mouth 10 of roughly selecting flotation column 8 bottoms; Roughly select concentrate F and enter selected flotation column 13 by the discrepancy in elevation of roughly selecting flotation column 8 and selected flotation column 13 by selected flotation column inlet 11 from roughly selecting concentrate hopper outlet 6.What enter selected flotation column 13 roughly selects concentrate F further FLOTATION SEPARATION under selected circulating pump 14 and bubble generator effect, and selected concentrate H discharges from selected flotation column 13 top concentrate hoppers outlets 12, and this concentrate is that final tungsten is roughly selected the concentrate product.Cleaner tailings I enters chats Buffer Pool 16 from selected flotation column 13 bottom cleaner tailings mouths 15, and this part ore pulp returns pump 17 through chats and carries back by pipeline 18 and roughly select mixing cirtern 1, enters tungsten once more and roughly selects operation.
Shown in Figure 2, column type short-stage tungseten crude grading equipment of the present invention, the tank level control system that comprise mixing cirtern, flotation column, constitutes by electric control valve, pressure sensor, PID controller and centralized Control cabinet and constitute the chats circulatory system by circulating pump, bubble generator, wear-resisting mozzle and Pressure gauge.Mixing cirtern is provided with three, and three mixing cirterns 1,2,3 are arranged toward low ladder from high by the discrepancy in elevation, are interconnected between three mixing cirterns.Flotation column is divided into roughly selects 13 two of flotation column 8 and selected flotation columns, roughly selects flotation column 8 and selected flotation column 13 and is height and arranges in turn and communicate.The grout outlet of mixing cirtern 3 by pipeline with roughly select flotation column 8 and link together, what to roughly selecting flotation column 8 in transfer ore pulp was housed on the pipeline roughly selects feed pump 4, the concentrate hopper of roughly selecting flotation column 8 exports 6 and links together by pipeline and selected flotation column 13.Selected flotation column 13 has chats Buffer Pool 16, and chats Buffer Pool 16 is connected with mixing cirtern 1 by pipeline 18, the chats that chats is delivered to mixing cirtern 1 is housed on the pipeline 18 returns pump 17.
Claims (4)
1. column type short-stage tungseten crude grading process is characterized in that: roughly selected and selected three parts of post are formed by slurry preparation, post, its step is as follows:
A. tungsten is roughly selected raw ore (A) and fed mixing cirtern (1), add activator (B) simultaneously, enter mixing cirtern (2) after sizing mixing, adding inhibitor (C) in mixing cirtern (2) continues to stir, then ore pulp enters mixing cirtern (3), and adds collecting agent (D) therein and (E) stir and to be prepared into floatation feed;
B. floatation feed be delivered to roughly select in the flotation column (8) carry out FLOTATION SEPARATION with roughly selecting feed pump (4), roughly select concentrate (F) by the discrepancy in elevation of roughly selecting flotation column (8) and selected flotation column (13) from flowing into selected flotation column (18); Rougher tailings (G) is discharged from roughly selecting flotation column (8) bottom mine tailing mouth (10);
C. roughly select concentrate (F) further sorting in selected flotation column (13), selected concentrate (H) flows out from selected flotation column (13) top concentrate hopper outlet (12); Cleaner tailings (I) flows into chats Buffer Pool (16) from selected flotation column (13) bottom mine tailing mouth (15), and the ore pulp in the Buffer Pool (16) returns pump (17) by chats and is delivered to and roughly selects mixing cirtern (1), enters tungsten once more and roughly selects operation.
2, column type short-stage tungseten crude grading process according to claim 1 is characterized in that: described activator (B) adopts plumbi nitras, and inhibitor (C) adopts waterglass, collecting agent (D) and (E) employing chelating collecting agent.
3, column type short-stage tungseten crude grading process according to claim 1 and 2 is characterized in that: the mixing time of ore pulp in mixing cirtern is 10～15 minutes, and the mass percent concentration of ore pulp is 30～50%.
4. column type short-stage tungseten crude grading equipment comprises mixing cirtern, flotation column, tank level control system and the chats circulatory system, it is characterized in that: described mixing cirtern is provided with three, and three mixing cirterns (1,2,3) are arranged by discrepancy in elevation ladder and communicated; Flotation column is divided into roughly selects (13) two of flotation column (8) and selected flotation columns, roughly selects flotation column (8) and selected flotation column (13) and is height and arranges in turn and communicate; Roughly select between flotation column (8) and the mixing cirtern (3) and be connected by roughly selecting feed pump (4), selected flotation column (13) has chats Buffer Pool (16), and chats Buffer Pool (16) returns pump (17) through chats and links to each other with mixing cirtern (1) by pipeline (18).
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200610097752XA CN100460079C (en) | 2006-11-25 | 2006-11-25 | Column type short-stage tungseten crude grading process and equipment |
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|---|---|---|---|
| CNB200610097752XA CN100460079C (en) | 2006-11-25 | 2006-11-25 | Column type short-stage tungseten crude grading process and equipment |
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| CN1962074A true CN1962074A (en) | 2007-05-16 |
| CN100460079C CN100460079C (en) | 2009-02-11 |
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| CN101786048A (en) * | 2010-03-09 | 2010-07-28 | 中国矿业大学 | Mineral floatation technique |
| CN102233302A (en) * | 2011-06-10 | 2011-11-09 | 福建省龙岩龙能粉煤灰综合利用有限公司 | External-external fly ash multi-stage floatation separation system |
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| DE2445675B2 (en) * | 1974-09-25 | 1977-02-24 | Metallgesellschaft Ag, 6000 Frankfurt | METHOD OF FLOTATION OF CREST LIGHTS |
| SU729271A1 (en) * | 1978-09-04 | 1980-04-25 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский И Проектный Институт Механической Обработки Полезных Ископаемых | Method of processing sulfide-containing scheelite products |
| US4208275A (en) * | 1979-01-24 | 1980-06-17 | The United States Of America As Represented By The Secretary Of The Interior | Froth flotation using lanolin modifier |
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| CN101786048A (en) * | 2010-03-09 | 2010-07-28 | 中国矿业大学 | Mineral floatation technique |
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