CN104624380A - Sulphur dressing method adopting titanium dioxide production waste water as activating agents - Google Patents
Sulphur dressing method adopting titanium dioxide production waste water as activating agents Download PDFInfo
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- CN104624380A CN104624380A CN201510002428.4A CN201510002428A CN104624380A CN 104624380 A CN104624380 A CN 104624380A CN 201510002428 A CN201510002428 A CN 201510002428A CN 104624380 A CN104624380 A CN 104624380A
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- waste water
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Abstract
The invention discloses a sulphur dressing method adopting titanium dioxide production waste water as activating agents. Ball milling and size mixing are carried out on iron pyrite, then the titanium dioxide production waste water is added to ore pulp, the ore pulp is activated under stirring, flotation reagents and collecting agents are added to activated ore pulp by the book for flotation, then inflation and bubble scraping are carried out, and sulphur concentrates are obtained. The quality of the selected sulphur concentrates can be guaranteed, the cost of the activating agents in the dressing process is saved, environment protection pressure is relieved, and considerable social benefits and economic benefits are brought to enterprises. The sulphur content of the obtained sulphur concentrates is more than 45 percent, and the sulphur recovery rate is 88 percent to 95 percent. According to the method, the cost of the activating agents can be saved by 3,840,000 yuan for a sulphur concentrate manufacturer with the annual output of 200,000 tons. Waste water produced in the sulphur dressing production process is all reused after simple sedimentation, and returns to an ore grinding system, no water is drained outside, due to the fact that few residual agents are included in tailing water, the dosage of the agents can be saved through reusing, and the environment protection pressure is relieved.
Description
Technical field
The present invention relates to a kind of titanium white production waste water selects sulphur method as activator, belong to technics of metallurgy mineral dressing technical field.
Background technology
The domestic titanium white production overwhelming majority all adopts sulfuric acid process, in process of production, often produce the waste water that 1 ton of titanium dioxide need discharge 100 ~ 150 tons, in waste water, main component is sulfuric acid and ferrous sulfate, sulfuric acid concentration is 15 ~ 20%, this not only causes the serious waste of resource, and can not arrange directly outward, need process, could discharge after meet the requirement of environmental protection, process time commonly use lime carry out in and, but it is high to there is processing cost, invest the problems such as large, therefore, process titanium white production waste water becomes one of titanium dioxide producer and environmental administration difficult problem urgently to be resolved hurrily.
Troilite is one of base stock of chemical industry, and troilite sorts based on flotation, and gravity treatment is auxiliary.Troilite native floatability is better, and in weak acidic medium, floatability is best, and along with pH rises, floatability declines, and pH is more than 9 ~ 10, and troilite is suppressed, and floatability sharply declines.Troilite can form passivating film with air reaction in long-term stacking process, affects its floatability, and troilite is many with other mineral intergrowth, as metalliferous minerals such as copper, lead, zinc.Because the metalliferous minerals such as copper, lead, zinc are worth high, often add inhibitor and suppress troilite, diffeential floatation precious metal mineral.Inhibitor the most frequently used is in the industrial production lime, often adds a large amount of lime, and lime is mainly with OH
-ion suppresses troilite, generates hydrophily Fe (OH) at mineral surfaces
2, Fe (OH)
3, Ca (OH)
2and the film of the hydration compound of calcium, thus reduce troilite to the absorption of double xanthate, troilite is suppressed.
In " coloured mining and metallurgy " the 27th 2011 volume the 3rd phases 6 monthly magazines yellow have into wait in the article " flotation of pyrite inhibitor present Research " of people and point out " pyrite suppressed after; available sulfuric acid reduces pH and activates, and also can use the medicaments such as copper sulphate, carbonic hydroammonium, sodium silicofluoride, carbon dioxide, sodium carbonate to activate ".Therefore, titanium white production waste water can be used as the activator of troilite, can not only reduce pH make suppressed after troilite floatability improve, also make titanium white production waste water obtain interests simultaneously.
Summary of the invention
For solving the problems such as titanium white production waste water is difficult, the invention provides a kind of titanium white production waste water selects sulphur method as activator, both activator expense in ore dressing process had been saved, treatment in situ sulfuric acid method titanium pigment factory effluent again, alleviate environmental protection pressure, and the iron concentrate quality selected is better.
The object of the invention is to be achieved through the following technical solutions: a kind of titanium white production waste water selects the method for sulphur as activator, specifically through following each step:
(1) by FeS
2content is that the troilite of 15 ~ 35wt% reaches more than 85% through being milled to fineness for-200 object breezes, then size mixing to ore pulp solid content be 40 ~ 55wt%;
(2) in the ore pulp of step (1), add titanium white production waste water until pH=5 ~ 6 of ore pulp time stop adding, then carry out activation 15 ~ 45 minutes under stirring, then regulate the pH value of ore pulp to be 5 ~ 6;
(3) ore pulp after step (2) being activated adds floating agent routinely and collecting agent carries out flotation, then through inflating, scraping bubble, obtains iron concentrate.
The pH value of the adjustment ore pulp of described step (2) is 5 ~ 6 is use titanium white production waste water to regulate.
The floating agent of described step (3) is terpenic oil, and addition is troilite 70 ~ 200g per ton.
The collecting agent of described step (3) is that black powder=(mixture of 4 ~ 1) ︰ 1 mass ratioes, addition is troilite 150 ~ 300g per ton to Ding base Huang Yao ︰ butylamine.
The advantage that the present invention possesses and effect: titanium white production waste water is substituted the activator of troilite in plumbous zinc flotation tailing by the present invention, adopt floatation process to select troilite.The present invention can not only ensure the iron concentrate quality selected, and saves the activator expense in mineral processing production, also reduces environmental protection pressure, for enterprise brings considerable Social benefit and economic benefit.The sulfur content of gained iron concentrate reaches more than 45%, and sulfur recovery rate reaches 88 ~ 95%.Produce 1 ton of iron concentrate by method of the present invention can save activator expense and reach 19.2 yuan, the iron concentrate producer for annual output 200000 tons can save activator cost for 1 year and reach 3,840,000 yuan.Titanium white production waste water is substituted the activator of troilite in plumbous zinc flotation tailing, this selects the waste water fully recovering after plain sedimentation produced in the production process of sulphur, return grinding system, anhydrous outer row, because containing a small amount of Residuals in tailing water, reuse also can save dosing, alleviates environmental protection pressure.
Detailed description of the invention
Below by embodiment, the present invention will be further described.
Embodiment 1
(1) by FeS
2content is that the troilite of 20wt% reaches 85% through being milled to fineness for-200 object breezes, then size mixing to ore pulp solid content be 40 ~ 45wt%;
(2) in the ore pulp of step (1), add titanium white production waste water until pH=5 ~ 5.5 of ore pulp time stop adding, then carry out activation 15 minutes under stirring, then use titanium white production waste water to regulate the pH value of ore pulp to be 5 ~ 5.5;
(3) ore pulp after step (2) being activated adds terpenic oil by troilite 150g per ton, adds the mixture of Ding base Huang Yao ︰ butylamine black powder=1 ︰ 1 mass ratio, then carry out flotation by troilite 200g per ton, then through inflating, scraping bubble, obtains iron concentrate.The sulfur content of iron concentrate is the iron concentrate of 45 ~ 47%, and the sulfur recovery rate of iron concentrate reaches 90 ~ 92%.
Embodiment 2
(1) by FeS
2content is that the troilite of 30wt% reaches 90% through being milled to fineness for-200 object breezes, then size mixing to ore pulp solid content be 45 ~ 50wt%;
(2) in the ore pulp of step (1), add titanium white production waste water until pH=5.5 ~ 6 of ore pulp time stop adding, then carry out activation 30 minutes under stirring, then use titanium white production waste water to regulate the pH value of ore pulp to be 5.5 ~ 6;
(3) ore pulp after step (2) being activated adds terpenic oil by troilite 70g per ton, adds the mixture of Ding base Huang Yao ︰ butylamine black powder=4 ︰ 1 mass ratio, then carry out flotation by troilite 150g per ton, then through inflating, scraping bubble, obtains iron concentrate.The sulfur content of iron concentrate is the iron concentrate of 46 ~ 48%, and the sulfur recovery rate of iron concentrate reaches 88 ~ 91%.
Embodiment 3
(1) by FeS
2content is that the troilite of 15wt% reaches 88% through being milled to fineness for-200 object breezes, then size mixing to ore pulp solid content be 40 ~ 50wt%;
(2) in the ore pulp of step (1), add titanium white production waste water until pH=5.2 ~ 5.8 of ore pulp time stop adding, then carry out activation 45 minutes under stirring, then use titanium white production waste water to regulate the pH value of ore pulp to be 5.2 ~ 5.8;
(3) ore pulp after step (2) being activated adds terpenic oil by troilite 200g per ton, adds the mixture of Ding base Huang Yao ︰ butylamine black powder=2 ︰ 1 mass ratio, then carry out flotation by troilite 250g per ton, then through inflating, scraping bubble, obtains iron concentrate.The sulfur content of iron concentrate is the iron concentrate of 42 ~ 45%, and the sulfur recovery rate of iron concentrate reaches 91 ~ 94%.
Embodiment 4
(1) by FeS
2content is that the troilite of 35wt% reaches 92% through being milled to fineness for-200 object breezes, then size mixing to ore pulp solid content be 50 ~ 55wt%;
(2) in the ore pulp of step (1), add titanium white production waste water until pH=5.2 ~ 6 of ore pulp time stop adding, then carry out activation 25 minutes under stirring, then use titanium white production waste water to regulate the pH value of ore pulp to be 5.2 ~ 6;
(3) ore pulp after step (2) being activated adds terpenic oil by troilite 160g per ton, adds the mixture of Ding base Huang Yao ︰ butylamine black powder=3 ︰ 1 mass ratio, then carry out flotation by troilite 300g per ton, then through inflating, scraping bubble, obtains iron concentrate.The sulfur content of iron concentrate is the iron concentrate of 45 ~ 48%, and the sulfur recovery rate of iron concentrate reaches 90 ~ 93%.
Below by comparative example, advantage of the present invention and effect are further elaborated.
One, comparative example is set:
1, comparative example 1: only distinguish with embodiment 1 and be to use sulfuric acid to substitute titanium white production waste water.
2, comparative example 2: only distinguish with embodiment 1 and be to use copper sulphate to substitute titanium white production waste water.
3, comparative example 3: only distinguish with embodiment 1 and be to use ammonium hydrogen sulfate to substitute titanium white production waste water.
4, comparative example 4: only distinguish with embodiment 1 and be to use sodium silicofluoride to substitute titanium white production waste water.
5, comparative example 5: only distinguish with embodiment 1 and be to use sodium carbonate to substitute titanium white production waste water.
Two, detection and result:
1, titanium white production waste water used in embodiment 1, its original key component content is as follows: sulfuric acid 15 ~ 20%, FeSO
45%, TiOSO
42%, Al
2(SO
4)
32%, pH value <1.
Embodiment 1 is prepared in iron concentrate process, and tailing water fully recovering after plain sedimentation of generation, returns grinding system, anhydrous outer row, and because containing a small amount of Residuals in tailing water, reuse also can save dosing.
2, the grade of comparative example and embodiment gained iron concentrate and each index refer to following table:
Three, conclusion:
Method provided by the invention can make titanium white production waste water be recycled, and produce iron concentrate non-wastewater discharge, without the need to processing titanium white production waste water, all waste water continues to recycle after replenishing clear water.Embodiment of the present invention gained iron concentrate meets quality standard, and effectively sulphur composition is higher than the comparative example using conventional activating agent, and activator cost is significantly saved, and sulfur recovery rate is high.
Claims (4)
1. select a method for sulphur with titanium white production waste water as activator, it is characterized in that through following each step:
(1) by FeS
2content is that the troilite of 15 ~ 35wt% reaches more than 85% through being milled to fineness for-200 object breezes, then size mixing to ore pulp solid content be 40 ~ 55wt%;
(2) in the ore pulp of step (1), add titanium white production waste water until pH=5 ~ 6 of ore pulp time stop adding, then carry out activation 15 ~ 45 minutes under stirring, then regulate the pH value of ore pulp to be 5 ~ 6;
(3) ore pulp after step (2) being activated adds floating agent routinely and collecting agent carries out flotation, then through inflating, scraping bubble, obtains iron concentrate.
2. titanium white production waste water according to claim 1 selects the method for sulphur as activator, it is characterized in that: the pH value of the adjustment ore pulp of described step (2) is 5 ~ 6 is use titanium white production waste water to regulate.
3. titanium white production waste water according to claim 1 selects the method for sulphur as activator, it is characterized in that: the floating agent of described step (3) is terpenic oil, and addition is troilite 70 ~ 200g per ton.
4. titanium white production waste water according to claim 1 selects the method for sulphur as activator, it is characterized in that: the collecting agent of described step (3) is that black powder=(mixture of 4 ~ 1) ︰ 1 mass ratioes, addition is troilite 150 ~ 300g per ton to Ding base Huang Yao ︰ butylamine.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672101A (en) * | 2018-07-09 | 2018-10-19 | 玉溪矿业有限公司 | A kind of method of sulphur active flotation in copper sulfide sulphur mine nominal group process |
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Application publication date: 20150520 |