CN105597938A - Beneficiation method of scheelite - Google Patents
Beneficiation method of scheelite Download PDFInfo
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- CN105597938A CN105597938A CN201510630645.8A CN201510630645A CN105597938A CN 105597938 A CN105597938 A CN 105597938A CN 201510630645 A CN201510630645 A CN 201510630645A CN 105597938 A CN105597938 A CN 105597938A
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Abstract
The invention relates to a beneficiation method of scheelite containing 0.2 to 0.5 percent of WO3, which is characterized by comprising the following steps: crushing and grinding feed ore to -0.074mm size fraction accounting for 80 to 90%; adding 500 to 1,200 g/ton of sodium carbonate or sodium hydroxide as a regulator according to the scheelite feed ore weight, and stirring for 3 minutes; adding 800 to 2000 g/ton of water glass and 20 to 150 g/ton of sodium hexametaphosphate as an inhibitor, and stirring for 5 minutes; adding 200 to 300 g/t of a collector, stirring for 3 minutes, scraping for 5 minutes and roughing once; performing blank concentrating or inhibitor adding concentrating once, and scraping for 3 minutes to obtain a crude concentrate; adding 100 to 150 g/ton of a collector, scavenging once, and scraping for 3 minutes to obtain tailings; merging scavenging concentrate and cleaning tailings into middlings. The sodium hexametaphosphate and water glass are mixed and used as the inhibitor, so that the recovery rate of tungsten is increased by 3-5 percent. The beneficiation method provided by the inventive has the advantages of facilitating industrial production operation, effectively reducing the use amount of water glass, reducing drug cost and improving the utilization ratio of tungsten resource, and the process is simple.
Description
Technical field
The present invention relates to a kind of beneficiation method of tungsten ore, belong to technique of preparing field.
Background technology
China's tungsten resource is abundant, and reserves, output all occupy first place in the world. Tungsten is a kind of rare metal with strategic importance,Be widely used in the high-tech areas such as metallurgy, military affairs, chemical industry, therefore how rational exploitation and utilization tungsten resource receives much concern always.In the tungsten mineral that nature has been found, tool industrial value be wolframite and scheelite, and that the black tungsten resource of China approaches is exhausted,Making full use of white tungsten resource replaces black tungsten resource extremely urgent.
The tungsten deposit major part that China has found at present is skarn type, wherein black and white tungsten ore explanation symbiosis, association componentComplexity and disseminated grain size are thinner, generally adopt reselecting method to reclaim coarse fraction tungsten ore, and fine fraction tungsten ore (mostly being white tungsten) is by floatingSelect method to reclaim. According to the classification of type of gangue mineral, white tungsten floatation process can simply be divided into scheelite-quartz (silicate mineral)Type and scheelite-calcite, fluorite (barite) type; According to floatation process classification, can be divided into white tungsten normal temperature flotation technique andThe white tungsten floatation process of heating. At present, China is obtaining more progress aspect white tungsten floatation process, and production technology comparatively becomesRipe, the requirement of raw ore Beneficiation Feed Grade is also relaxed greatly, even from mine tailing, also can reclaim tungsten, this is conducive to the abundant of tungsten resourceRecycle.
White tungsten flotation adopts controling differential flotation process for copper more, obtains tungsten rough concentrate by preconcentration, more selectedly obtains meeting productThe qualified tungsten concentrate of product quality requirement, whole technological process need be used adjusting agent, inhibitor and collecting agent. The effect master of adjusting agentIf adjust ore pulp Acidity of Aikalinity etc., make flotation environment be conducive to separating of object mineral and gangue mineral most; Inhibitor is mainly doneFor gangue mineral, make it not along with flotation froth enters concentrate product; Collecting agent is to act on object mineral, and it is becomeHydrophobic easy floating enters concentrate product.
According to the difference of ore properties, in white tungsten controling differential flotation process for copper, kind and the consumption of various medicaments are different, butThe overwhelming majority needs to use the inhibitor of waterglass as gangue mineral. Waterglass is due to wide material sources, and environmental pollutionLittle, and inhibition is better, therefore extensive use in white tungsten floatation process. But what ubiquity waterglass consumption was excessive asksTopic, this has increased floating agent cost virtually; General direct use waterglass stoste in industrial production simultaneously, due to waterglassOriginal liquid concentration is high, and viscosity is larger, very easily causes pharmaceutical pipeline to stop up, and makes troubles to production operation, makes tailing water be difficult for simultaneouslySedimentation.
Summary of the invention
The object of this invention is to provide a kind of consumption that reduces waterglass in white tungsten flotation, improve the recovery of tungsten in rough concentrateThe beneficiation method of rate.
Scheelite of the present invention refers to containing WO30.2 ~ 0.5% scheelite.
Ore dressing of the present invention is made up of following steps: will account for 80 ~ 90% to the broken ore grinding in ore deposit to-0.074mm grade; By whiteTungsten ore, to ore deposit weighing scale, adds 500 ~ 1200 grams/ton, adjusting agent sodium carbonate or NaOH, stirs 3 minutes; Add inhibitor water20 ~ 150 grams/ton of 800 ~ 2000 grams/ton, glass and calgons, stir 5 minutes; Add 200 ~ 300 grams/ton of collecting agents, stirMix 3 minutes, scrape bubble and within 5 minutes, do one roughing; Blank or inhibiting are once selected, scrape bubble and within 3 minutes, obtain rough concentrate; Interpolation is caughtReceive 100 ~ 150 grams/ton of agent, scan once, scrape bubble and within 3 minutes, obtain mine tailing; Scavenger concentrate and cleaner tailings are merged into chats.
Collecting agent of the present invention is one or both in ZL, oxidized paraffin wax soap or enuatrol.
Calgon generally uses as adjusting agent (dispersant) in floatation process, and consumption is less, but can strengthen eachMonomer between mineral grain disperses, and improves flotation effect. In addition, calgon is effective inhibition of silicate mineralAgent. Therefore, the present invention is directed to the higher situation of white tungsten floatation process waterglass consumption, in floatation process, add a small amount of six inclined to one sideSodium phosphate and waterglass are made into mixed inhibitor, can significantly reduce the consumption of waterglass, and the flotation that is conducive to improve tungsten is returnedYield.
Sorting index compared with prior art, is not affecting under the prerequisite of rough concentrate quality, can improve returning of rough concentrate tungstenYield. According to the difference of raw ore composition, mix and use calgon and waterglass as inhibitor, with independent use waterglassCompare as inhibitor, can reduce waterglass consumption.
Selected scheelite ore pulp is mine tailing or the scheelite raw ore ore deposit through ore grinding after of scheelite after removing sulphide oreSlurry. At suitable chemical feeding points, add successively adjusting agent, mixed inhibitor and collecting agent, wherein mixed inhibitor can be respectivelyAdd calgon and waterglass, also calgon and waterglass can be made into mixture use by proper proportion.
The present invention mixes and uses calgon and waterglass to make inhibitor, with independent use waterglass as inhibitor phaseRatio, can not affect under the prerequisite of rough concentrate quality, and the rate of recovery of tungsten improves 3 ~ 5%. Technique of the present invention is simple, is convenient to industry rawProduce operation, can effectively reduce the use amount of waterglass, reduce reagent cost, thereby improve the utilization rate of tungsten resource.
Brief description of the drawings
Fig. 1 is beneficiation method flow chart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described, and unrestricted the present invention.
Embodiment 1
Ore sample is Hunan scheelite primary sample, containing WO30.23%。
Broken ore grinding to-0.074mm grade accounts for 85%; Add 1000 grams/ton, adjusting agent sodium carbonate, stir 3 minutes; Add20 grams/ton of 2000 grams/ton of waterglass and calgons, stir 5 minutes; Add ZL200 gram/ton of collecting agent, stir 3 minutes,Scrape bubble and within 5 minutes, do one roughing; Blank once selected, scrape bubble and within 3 minutes, obtain rough concentrate; Add ZL100 gram/ton of collecting agent, sweepChoosing once, is scraped bubble and within 3 minutes, is obtained mine tailing; Scavenger concentrate and cleaner tailings are merged into chats.
Embodiment 2
Ore sample is that Jiangxi scheelite raw ore removes the mine tailing sample after sulphide ore, containing WO30.18%。
Without fine grinding; Add 500 grams/ton, adjusting agent NaOH, stir 3 minutes; Add 2000 grams/ton of waterglass and six150 grams/ton of sodium metaphosphates (former flow process is roughly selected 5000 grams/ton of independent use waterglass consumptions), stir 5 minutes; Add collecting agent50 grams/ton of 250 grams/ton of oxidized paraffin wax soaps and enuatrols, stir 3 minutes, scrapes bubble and within 5 minutes, do one roughing; It is blank once selected,Scrape bubble and within 3 minutes, obtain rough concentrate; Add 150 grams/ton of collecting agent oxidized paraffin wax soaps, scan once, scrape bubble and within 3 minutes, obtain mine tailing;Scavenger concentrate and cleaner tailings are merged into chats.
Embodiment 3
Ore sample is Jiangxi scheelite primary sample, containing WO30.50%。
Broken ore grinding to-0.074mm grade accounts for 80%; Add 800 grams/ton, adjusting agent sodium carbonate, stir 3 minutes; Add water60 grams/ton of 2000 grams/ton, glass and calgons, stir 5 minutes; Add ZL300 gram/ton of collecting agent, stir 3 minutes, scrapeSteep and within 5 minutes, do one roughing; Add 20 grams/ton of calgons (former flow process is blank selected), once selected, scrape bubble 3 minutesObtain rough concentrate; Add ZL150 gram/ton of collecting agent, scan once, scrape bubble and within 3 minutes, obtain mine tailing; Scavenger concentrate and cleaner tailingsMerge into chats.
Embodiment 4
Ore sample is that certain scheelite raw ore removes the mine tailing sample after sulphide ore, containing WO30.21%。
Be finely ground to-0.074mm grade accounts for 85%; Add 1200 grams/ton, adjusting agent sodium carbonate, stir 3 minutes; Add water glass150 grams/ton of 800 grams/ton of glass and calgons, stir 5 minutes; Add ZL250 gram/ton of collecting agent, stir 3 minutes, scrape bubbleWithin 5 minutes, do one roughing; Blank once selected, scrape bubble and within 3 minutes, obtain rough concentrate; Add ZL100 gram/ton of collecting agent, scan oneInferior, scrape bubble and within 3 minutes, obtain mine tailing; Scavenger concentrate and cleaner tailings are merged into chats.
Table 1 is tungsten grade and the tungsten recovery rate of the embodiment of the present invention. Result shows, the present invention adds calgon to replacePart waterglass, can reduce and roughly select waterglass consumption approximately 1/4 ~ 1/3, and rough concentrate tungsten recovery rate improves 3 ~ 5% left and right.
Tungsten grade and the tungsten recovery rate of table 1 embodiment of the present invention
Claims (2)
1. a beneficiation method for scheelite, containing WO30.2 ~ 0.5% scheelite, is characterized in that being made up of following steps: willAccount for 80 ~ 90% to the broken ore grinding in ore deposit to-0.074mm grade; Press scheelite to ore deposit weighing scale, add adjusting agent sodium carbonate or hydrogen-oxygenChange 500 ~ 1200 grams/ton, sodium, stir 3 minutes; Add 800 ~ 2000 grams/ton of inhibitor waterglass and calgon 20 ~ 150Gram/ton, stir 5 minutes; Add 200 ~ 300 grams/ton of collecting agents, stir 3 minutes, scrape bubble and within 5 minutes, do one roughing; Blank or addInhibitor is once selected, scrapes bubble and within 3 minutes, obtains rough concentrate; Add 100 ~ 150 grams/ton of collecting agents, scan once, scrape bubble 3 minutesObtain mine tailing; Scavenger concentrate and cleaner tailings are merged into chats.
2. the beneficiation method of a kind of scheelite according to claim 1, is characterized in that described collecting agent is ZL, oxidation stoneOne or both in wax soap or enuatrol.
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| CN201510630645.8A CN105597938A (en) | 2015-09-29 | 2015-09-29 | Beneficiation method of scheelite |
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| CN201510630645.8A CN105597938A (en) | 2015-09-29 | 2015-09-29 | Beneficiation method of scheelite |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106733215A (en) * | 2016-12-07 | 2017-05-31 | 广西大学 | A kind of preparation method of scheelite inhibitor |
| CN106733217A (en) * | 2017-04-07 | 2017-05-31 | 安徽工业大学 | A kind of calcareous Scheelite Flotation collecting agent high and its preparation method and application method |
| CN107583769A (en) * | 2016-07-06 | 2018-01-16 | 长春黄金研究院 | A kind of method that flotation tailing normal temperature selects tungsten |
| CN107983539A (en) * | 2017-12-06 | 2018-05-04 | 中南大学 | Application of the hydrolysis of polymaleic anhydride in Scheelite Flotation |
| CN108993778A (en) * | 2018-06-22 | 2018-12-14 | 昆明理工大学 | A kind of scheelite normal temperature flotation method |
| CN111495600A (en) * | 2020-04-14 | 2020-08-07 | 湖南柿竹园有色金属有限责任公司 | Scheelite flotation method |
| CN114367382A (en) * | 2021-12-09 | 2022-04-19 | 湖南柿竹园有色金属有限责任公司 | Normal-temperature flotation method for high-calcium low-grade scheelite |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107583769A (en) * | 2016-07-06 | 2018-01-16 | 长春黄金研究院 | A kind of method that flotation tailing normal temperature selects tungsten |
| CN106733215A (en) * | 2016-12-07 | 2017-05-31 | 广西大学 | A kind of preparation method of scheelite inhibitor |
| CN106733215B (en) * | 2016-12-07 | 2019-02-01 | 广西大学 | A kind of preparation method of scheelite inhibitor |
| CN106733217A (en) * | 2017-04-07 | 2017-05-31 | 安徽工业大学 | A kind of calcareous Scheelite Flotation collecting agent high and its preparation method and application method |
| CN106733217B (en) * | 2017-04-07 | 2019-06-11 | 安徽工业大学 | A kind of high calcareous Scheelite Flotation collecting agent and its preparation method and application method |
| CN107983539A (en) * | 2017-12-06 | 2018-05-04 | 中南大学 | Application of the hydrolysis of polymaleic anhydride in Scheelite Flotation |
| CN108993778A (en) * | 2018-06-22 | 2018-12-14 | 昆明理工大学 | A kind of scheelite normal temperature flotation method |
| CN111495600A (en) * | 2020-04-14 | 2020-08-07 | 湖南柿竹园有色金属有限责任公司 | Scheelite flotation method |
| CN114367382A (en) * | 2021-12-09 | 2022-04-19 | 湖南柿竹园有色金属有限责任公司 | Normal-temperature flotation method for high-calcium low-grade scheelite |
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