CN105013595B - Beneficiation method for producing high-purity kyanite through low-grade kyanite - Google Patents
Beneficiation method for producing high-purity kyanite through low-grade kyanite Download PDFInfo
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Abstract
The invention discloses a beneficiation method for producing high-purity kyanite through low-grade kyanite, and belongs to the technical field of mineral processing. Low-grade kyanite ore is separated. When ore grinding is carried out, superfine magnetite powder is added, the single separation degree of the kyanite reaches more than 85%, strong magnetic separation is carried out on an ore grinding product, and weak magnetic separation is carried out on strong magnetic tailings, so that kyanite rough concentrate, and iron ore concentrate and tailings which can be recycled are obtained. Under the condition that the pH value ranges from 6.5 to 7.5, an inhibitor is phosphate starch, a collecting agent is a lauryl amine acetate and octanol combined flotation reagent, a one-roughing-two-concentration open floatation technological process is carried out, and a high-purity kyanite concentrate product with the purity larger than 95% and the Al2O3 grade larger than 60% is finally obtained. Generated roughing and two-time concentration tailings are combined together to serve as final tailings. The new technological process for flotation of the kyanite ore under the neutrality condition is provided, economic benefits are brought to a kyanite enterprise, corrosion to the device is further reduced, and the beneficiation method is of great practice significance in the sustainable development of the kyanite enterprise.
Description
Technical field
The invention belongs to technical field of mineral processing, and in particular to a kind of low-grade kyanite produces the choosing of high-purity kyanite
Ore deposit method.
Background technology
China's blue spar ore aboundresources, but rich ore is few, mostly the middle-low grade ore of mineral content 10%-25%, need
It is available through ore dressing rear.Scientific worker had carried out washability experimental study to most of kyanite deposit in the last few years, and
Kyanite ore dressing plant has been built up in Xingtai, Donghai Area, Jiangsu etc..But due to starting evening, processing and utilization level is also than relatively low.
The subject matter that presently, there are is production cost high, and Business Economic Benefit is low, the blue essence stone concentrate low problem of impurity high-quality,
Domestic and international market lacks competitiveness.As national economy is fast-developing, industrial department to kyanite the need for be no longer only
Quantitative growth, but have standard higher to quality, but China's Concentrated kyanite ore grade is substantially 50~55%,
High-purity kyanite (Al2O3>60%) production is substantially at blank, and high-quality kyanite need to be with relying primarily on the countries such as the U.S., South Africa
Import, therefore the domestic blue spar ore purification preparation of reinforcement meets domestic industry high standard demand, reduces such product import and relies on
Have great importance with improving mineral resources and efficiently utilizing.
The sorting purification technique of kyanite has magnetic separation, gravity treatment, flotation or its joint process, and wherein flotation is to obtain high
The main method of quality kyanite, but the production technology investigation to kyanite Mineral Processing Enterprises shows, the flotation of actual kyanite
Major part all under strong acidic environment produce, although the quality of kyanite is guaranteed, but to screening installation, production environment and
Operator forms larger unfavorable factor, also as the biggest obstacle of kyanite manufacturing enterprise sustainable development.Therefore, to carry
The technique of preparing level of China's kyanite mineral high, increases China's product competitiveness in the international market, it is therefore necessary to open
A kind of new and effective mineral processing circuit of kyanite in neutral conditions flotation is sent, High Purity Concentrated kyanite ore product is sub-elected
Product.
The content of the invention
The present invention is for the deficiency in existing kyanite sorting technology, there is provided a kind of low-grade kyanite produces high-purity aquamaine
The beneficiation method of stone.Blue spar ore stone mill ore deposit to the liberation degree of minerals of the 8%-15% of mineral containing kyanite is reached more than 85%,
And before ore mill is entered, super-fine magnetite powder is added by the new ore deposit amount 2%-8% for adding ore mill, fineness is accounted for for -400 mesh
90%, the super-fine magnetite powder of addition can form magnetic group on the iron mineral surface of monomer dissociation, strengthen the magnetic of iron mineral.By powder
The ore pulp of milled is by after the intensity magnetic separator of magnetic field intensity 480KA/m-640KA/m, obtaining kyanite rough concentrate；Strong magnetic tail mineral products
Product are the roller weak magnetic separator of 100KA/m-160KA/m by magnetic field intensity, and acquisition iron ore concentrate is back to grinding system and repeats to make
With remaining is used as product from failing.Kyanite rough concentrate flows into size mixing device, and pH value range adds inhibitor phosphoric acid in 6.5-7.5
The starch of ester two, then lauryl amine acetate and octanol compounding collecting agent are added, through the open circuit flows technique of one roughing recleaning
Flow, finally obtains purity>95.00% (Al2O3Grade is more than 60%) high-purity Concentrated kyanite ore product.The rougher tailings of generation,
The mine tailing of primary cleaning and recleaning is included together as true tailings product.
The technical scheme is that：
(1) the kyanite ore with the 8%-15% of mineral containing kyanite is raw material, the broken, list of ore grinding to kyanite mineral
Body degree of dissociation reaches more than 85%, before ore mill is entered, TFe grades is added by the new ore deposit amount 2%-8% for adding ore mill
55%-62%, wherein MFe contents are the super-fine magnetite powder of 90%-95%, and fineness accounts for 90% for -400 mesh；
(2) the good pulp density of grinding is controlled in 25%-50%, by the strong of magnetic field intensity 480KA/m-640KA/m
After magnetic separator, kyanite rough concentrate is obtained；Strong magnetic tail mineral products are the roller weak magnetic of 100KA/m-160KA/m by magnetic field intensity
Machine is selected, iron ore concentrate is obtained and is back to grinding system reuse, remaining is used as product from failing；
(3) kyanite rough concentrate flows into size mixing device, and pulp density is controlled in 25%-55%, and pH value range is in 6.5-
7.5, the starch 250g/t-600g/t of addition inhibitor phosphate two, after stirring 3min-10min, then add lauryl amine acetate and
Octanol compounds collecting agent 150g/t-500g/t, and the two ratio is 2.5-5.5：1, the ore pulp for mixing up enters flotation device, and inflation starts
Flotation 5min-15min obtains flotation rough concentrate, and when flotation rough concentrate is selected for the first time, pulp density is 15%-30%, addition
Lauryl amine acetate and octanol compounding collecting agent 75g/t-250g/t, the two ratio is 2.5-5.5：1, inhibitor phosphate two forms sediment
Powder 100g/t-300g/t, the Concentrated kyanite ore that primary cleaning is obtained carries out second selected, and pulp density is 15%-25%, is added
The starch 50g/t-100g/t of inhibiting phosphate two, kyanite flotation is the open circuit flows technique stream of one roughing recleaning
Journey, finally obtains purity>95.00% (Al2O3Grade is more than high-purity kyanite 60%), the rougher tailings of generation, primary cleaning
With the mine tailing of recleaning included together as true tailings product.
Compared with the prior art, the invention has the advantages that：
(1) before ore mill is entered, super-fine magnetite powder, fineness are added by the new ore deposit amount 2%-8% for adding ore mill
For -400 mesh account for 90%, strengthen weak magnetic mineral surface magnetism, feed them into high intensity magnetic separation concentrate product, reduce some weakly magnetic minerals
Thing is mixed into the coarse-fine mineral products of kyanite.
(2) in flotation operation, add the starch of phosphate two as inhibitor, the inhibitor serves stronger to kyanite
Inhibitory action, improve FLOTATION SEPARATION effect.
(3) collecting agent uses lauryl amine acetate and octanol to be formed with certain proportion compounding, and composite reagent enhances flotation
During selectivity, its flotation effect than be used alone lauryl amine acetate effect it is good.
(4) in flotation operation, pH value range reduces strong acid and sorting is set in 6.5-7.5, in neutral conditions flotation
Standby corrosion, improves the security of operation.
Brief description of the drawings
Fig. 1 is principle flow chart of the invention.
Specific embodiment
Embodiment 1
Primary raw material：Kyanite raw ore；The starch of phosphate two；Lauryl amine acetate；Octanol
Kyanite mineral content used is 12%, and gangue mineral mainly has biotite, quartz, chlorite etc..
Kyanite is crushed, ore grinding to the liberation degree of minerals of kyanite mineral reaches 87%, enter ore mill it
Before, TFe grades 60% are added by the new ore deposit amount 5% for adding ore mill, wherein MFe contents are 95% super-fine magnetite powder, carefully
Spend for -400 mesh account for 90%.
By the good pulp density control of grinding 35%, by after the intensity magnetic separator of magnetic field intensity 640KA/m, obtaining aquamaine
Stone rough concentrate；Strong magnetic tail mineral products are the roller weak magnetic separator of 120KA/m by magnetic field intensity, obtain iron ore concentrate and are back to ore grinding
System is reused, and remaining is used as product from failing.
Kyanite rough concentrate flows into size mixing device, and pulp density control 30%, pH value range adds inhibitor phosphorus 7.0
The starch 500g/t of acid esters two, after stirring 5min, then adds lauryl amine acetate and octanol compounding collecting agent 300g/t, the two ratio
It is 3：1.The ore pulp for mixing up enters flotation device, and inflation starts flotation 10min and obtains flotation rough concentrate, and flotation rough concentrate is smart for the first time
When selecting, pulp density is 20%, and addition lauryl amine acetate and octanol compound collecting agent 150g/t, and the two ratio is 3：1, suppress
The starch 250g/t of agent phosphate two, the Concentrated kyanite ore that primary cleaning is obtained carries out second selected, and pulp density is 20%, is added
The starch 100g/t of inhibiting phosphate two.Kyanite flotation is the open circuit flows technological process of one roughing recleaning, most
Concentrated kyanite ore product is obtained eventually.The mine tailing of the rougher tailings, primary cleaning and recleaning of generation is included together as final
Product from failing.
By above-mentioned technical proposal, (the Al of purity 95.36% is finally given2O3Grade 60.45%) Concentrated kyanite ore.
Embodiment 2
Primary raw material：Kyanite raw ore；The starch of phosphate two；Lauryl amine acetate；Octanol
Kyanite mineral content used is 14%, and gangue mineral mainly has biotite, quartz, chlorite, albite etc..
Kyanite is crushed, ore grinding to the liberation degree of minerals of kyanite mineral reaches 88%, enter ore mill it
Before, TFe grades 61% are added by the new ore deposit amount 7% for adding ore mill, wherein MFe contents are 93% super-fine magnetite powder, carefully
Spend for -400 mesh account for 90%.
By the good pulp density control of grinding 40%, by after the intensity magnetic separator of magnetic field intensity 600KA/m, obtaining aquamaine
Stone rough concentrate；Strong magnetic tail mineral products are the roller weak magnetic separator of 140KA/m by magnetic field intensity, obtain iron ore concentrate and are back to ore grinding
System is reused, and remaining is used as product from failing.
Kyanite rough concentrate flows into size mixing device, and pulp density control 25%, pH value range adds inhibitor phosphorus 7.0
The starch 400g/t of acid esters two, after stirring 6min, then adds lauryl amine acetate and octanol compounding collecting agent 300g/t, the two ratio
It is 4.5：1.The ore pulp for mixing up enters flotation device, and inflation starts flotation 8min and obtains flotation rough concentrate, and flotation rough concentrate is for the first time
When selected, pulp density is 25%, and addition lauryl amine acetate and octanol compound collecting agent 150g/t, and the two ratio is 4.5：1,
The starch 200g/t of inhibitor phosphate two, the Concentrated kyanite ore that primary cleaning is obtained carries out second selected, and pulp density is
20%, the starch 80g/t of addition inhibitor phosphate two.Kyanite flotation is the open circuit flows technique stream of one roughing recleaning
Journey, it is final to obtain Concentrated kyanite ore product.The mine tailing of the rougher tailings, primary cleaning and recleaning of generation included together as
True tailings product.
By above-mentioned technical proposal, (the Al of purity 95.47% is finally given2O3Grade 60.57%) Concentrated kyanite ore.
Claims (1)
1. a kind of low-grade kyanite produces the beneficiation method of high-purity kyanite, it is characterised in that：
A, with the kyanite ore of the 8%-15% of mineral containing kyanite be raw material, crush, the monomer solution of ore grinding to kyanite mineral
More than 85% is reached from degree, before ore mill is entered, TFe grades 55%- is added by the new ore deposit amount 2%-8% for adding ore mill
62%, wherein MFe contents are the super-fine magnetite powder of 90%-95%, and fineness accounts for 90% for -400 mesh；
B, the good pulp density of grinding is controlled in 25%-50%, by the intensity magnetic separator of magnetic field intensity 480KA/m-640KA/m
Afterwards, kyanite rough concentrate is obtained；Strong magnetic tail mineral products are the roller weak magnetic separator of 100KA/m-160KA/m by magnetic field intensity,
Obtain iron ore concentrate and be back to grinding system reuse, remaining is used as product from failing；
C, kyanite rough concentrate flow into size mixing device, and in 25%-55%, pH value range is in 6.5-7.5, addition for pulp density control
The starch 250g/t-600g/t of inhibitor phosphate two, after stirring 3min-10min, then adds lauryl amine acetate and octanol compounding
Collecting agent 150g/t-500g/t, the two ratio is 2.5-5.5：1, the ore pulp for mixing up enters flotation device, and inflation starts flotation
5min-15min obtains flotation rough concentrate, and when flotation rough concentrate is selected for the first time, pulp density is 15%-30%, addition 12
Amine acetate and octanol compounding collecting agent 75g/t-250g/t, the two ratio is 2.5-5.5：1, the starch of inhibitor phosphate two
100g/t-300g/t, the Concentrated kyanite ore that primary cleaning is obtained carries out second selected, and pulp density is 15%-25%, addition
The starch 50g/t-100g/t of inhibitor phosphate two；
D, kyanite flotation are the open circuit flows technological process of one roughing recleaning, finally obtain purity>95.00%,
Al2O3High-purity Concentrated kyanite ore product of the grade more than 60%, the mine tailing of the rougher tailings, primary cleaning and recleaning of generation
Included together as true tailings product.
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| CN109111101A (en) * | 2018-11-01 | 2019-01-01 | 中钢集团马鞍山矿山研究院有限公司 | A kind of purification by mineral method of glass sand |
| CN111250243B (en) * | 2020-03-09 | 2021-09-14 | 北京矿冶科技集团有限公司 | Beneficiation method for comprehensively recycling various products from low-grade kyanite ore |
| CN112125685B (en) * | 2020-09-25 | 2023-01-06 | 南阳开元高温新材料有限公司 | Low-heat-conduction mullite light heat-insulating brick |
| CN112094128A (en) * | 2020-09-25 | 2020-12-18 | 南阳开元高温新材料有限公司 | High-strength mullite light heat-insulating brick |
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| CN104624360A (en) * | 2014-12-24 | 2015-05-20 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
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| KR101504513B1 (en) * | 2012-08-03 | 2015-03-20 | 코카스엔텍 주식회사 | Valuable Mineral Collection Method From Fly Ash By Soot Preprocessing |
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| CN102744144A (en) * | 2012-05-29 | 2012-10-24 | 邢台兴国蓝晶石制造有限公司 | Beneficiation method for preparing kyanite ores |
| CN104624360A (en) * | 2014-12-24 | 2015-05-20 | 中国地质科学院郑州矿产综合利用研究所 | Combined reagent and method for sorting kyanite minerals under neutral condition |
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