CN101264465B - Singleness siderite full flotation ore dressing method - Google Patents

Singleness siderite full flotation ore dressing method Download PDF

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Publication number
CN101264465B
CN101264465B CN200810058371XA CN200810058371A CN101264465B CN 101264465 B CN101264465 B CN 101264465B CN 200810058371X A CN200810058371X A CN 200810058371XA CN 200810058371 A CN200810058371 A CN 200810058371A CN 101264465 B CN101264465 B CN 101264465B
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siderite
6min
stirs
ore
consumption
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CN101264465A (en
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陈晓鸣
邱崇栋
肖军辉
雷云
肖荣华
张昱
张宗华
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Kunming University of Science and Technology
Kunming Iron and Steel Group Co Ltd
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Kunming University of Science and Technology
Kunming Iron and Steel Group Co Ltd
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Abstract

The present invention relates to a single siderite all-flotation mineral separation method, belonging to the technical field of iron ore separation of mineral processing engineering, which adopts all-flotation technological process to process the single siderite ore with small amount of hematite-limonite, magnetic pyrite, pyrite and other ores. The processing method comprises the following steps: (1) the material is crushed to 3mm, mixed evenly and ground with liquid-solid weight ratio 1:2 and 75% to 95% of particle size of 0.074 mm, and (2) one roughing and triple cleaning are processed and the siderite concentrate ore with grade TFe larger than or equal to 38% and 75 to 86% of the iron recovery is acquired. The single siderite all-flotation mineral separation method has the advantages of adopting the siderite collecting agent for collecting, enabling the strong physico-chemical adsorption between the siderite surface and the collecting agent surface, and realizing the effective separation of the siderite and other ores.

Description

A kind of single siderite full flotation mineral separation method
Technical field:
The present invention relates to a kind of single siderite full flotation mineral separation method, belong to the technique of preparing field of Mineral Processing Engineering iron ore, adapt to based on siderite especially, association has the beneficiation method of hematite-limonite, magnetic iron ore, pyrite etc.
Background technology:
In the iron ore reserves of having verified, siderite (comprising symbiosis such as single siderite, bloodstone, limonite, water chestnut limonite) though account for world saving less than 10%,, have the prediction show that in world's iron ore potential resource, siderite accounts for more than 40%.China's siderite resource is than horn of plenty, and its reserves are at the forefront in the world, and total amount reaches about 18.34 hundred million tons.Because siderite Khenpo granularity is quite thin, complicated component, grade are low, iron is mainly composed with the form of carbonate and is deposited, and the part siderite is because of Mg 2+And Mn 2+Alternative Fe2+ forms isomorph and is magnesium, manganosiderite, and tax is stored in hematite-limonite and the magnetic iron ore.Brown iron ore grade is low, complicated difficult choosing, and the iron grade and the rate of recovery are difficult to be improved, and is easy to generate the argillization phenomenon simultaneously in grinding process, influences mineral processing index.At present, the complicated low-grade iron ore of siderite, limonite and association is an ore dressing difficult problem of generally acknowledging.Be that fully exploitation based on the low-grade siderite resource of siderite, abroad, often adopts conventional physical upgrading technology to the ore dressing of siderite type, as gravity treatment, high intensity magnetic separation, flotation, roasting etc. single or part makes up sorts flow process.Have the siderite ore dressing plant of semi-industrial scale in several countries in last century five, sixties Eastern Europe, but all exist technical-economic index generally on the low side, if any the Ukraine Ba Kaer ore dressing plant of roasting technique, concentrate grade is the highest can only to reach 53%; And for example Czech De Nani ore dressing plant is by the joint process of magnetic separation one flotation, iron concentrate grade only about 35%.Blue moral processing contains manganosiderite as German Seagal, iron concentrate grade 50%, the rate of recovery 62.8% (see the ore-dressing technique [J] that contains magnesian carbonate iron ore. external metallic ore ore dressing, 1975,7:4652).Still there is not both at home and abroad the practice of single siderite industrial utilization so far, even if Da Ye Iron Mine, wine steel ore can also can only obtain the siderite concentrate of iron content about 35% at the comprehensive siderite that reclaims a part of association in the flow process that sorts of iron ore.
Siderite belongs to carbonate type mineral, improve bigger through its iron grade after the roasting, though the roasting technique of siderite can obtain the higher iron ore concentrate of iron grade, but can bring a double roasting (magnetizing roast, once sintered) cost is very high, if the iron grade is enriched to about 39% with conventional physical upgrading method, again this product can be brought up to the iron grade about 55% through behind the pellet sintering, can reduce the roasting cost that bakes to burn the article brings like this, corresponding economic benefit improves; Power consumption, water consumption that same high intensity magnetic separation process is brought are all very big, and cost also is difficult to realize actual industrialization also than higher.At present, the bulk flotation technology of siderite does not also have actual successful experience, mainly is to be subjected to the difficult influence of selecting of siderite floatation collector.
Summary of the invention:
The present invention provides a kind of single siderite full flotation mineral separation method, association simultaneously has ores such as a spot of hematite-limonite, magnetic iron ore and pyrite to adopt the bulk flotation technological process at single siderite ore, can obtain grade TFe 〉=38%, the siderite concentrate index of iron recovery 75~86%.Bulk flotation technological process provided by the present invention is to utilize the siderite collecting agent to carry out collecting, can make the surface of siderite and collecting agent that strong physical and chemical adsorption takes place, and can realize effectively separating of siderite and other ore.
Siderite bulk flotation flow process of the present invention is divided into following step:
(1) raw material comminution: the siderite raw material is crushed to-3mm, and mixing, (q: Q)=1: 2, ratio adds the ball mill ore grinding, and grinding particle size accounts for 75%~95% for-0.074mm, and-0.100mm accounts for 100% by liquid-solid ratio R.
(2) flotation stage: siderite is carried out the operation of one roughing triple cleaning.Siderite is roughly selected: size mixing as adjusting agent with calgon, improve the decentralization of ore pulp, its consumption is 300~600g/t, stir 3~6min, sulfuric acid is transferred pH=5~6, stirs 3~6min, adds the starch consumption as inhibitor, its consumption is 500~800g/t, stir 3~6min, add SP type siderite high-efficient collecting agent, its consumption 400~800g/t, stir 3~6min, add 2 #Oil is as foaming agent, and its consumption is 10~40g/t, stirs 3~6min, inflates and scrape bubble, gets froth pulp I, enters the selected operation of next section; The selected I of siderite: sulfuric acid is transferred pH=5~6, stirs 3~6min, and starch consumption 300~500g/t stirs 3~6min simultaneously, adds 2 #Oil 10~30g/t stirs 3~6min inflation and scrapes bubble, gets froth pulp II and enters the selected operation of next section; The selected II of siderite: sulfuric acid is transferred pH=5~6, stirs 3~6min, and starch consumption 200~400g/t stirs 3~6min simultaneously, adds 2 #Oil 10~20g/t stirs 3~6min inflation and scrapes bubble, and get froth pulp III and enter the selected operation of next section, the selected III of siderite: sulfuric acid is transferred pH=5~6, stirs 3~6min, and starch consumption 100~300g/t stirs 3~6min simultaneously, adds 2 #Oil 5~10g/t, bubble is scraped in inflation, and froth pulp is through getting siderite concentrate product after dehydrating.
Described SP type collecting agent has been open in 200810058134.3 the patent application at application number, and its prescription and manufacture craft are as follows:
Raw material: lauryl amine S 1, mixed amine S 2, ether amine S 3, aphthenic acids { C nH 2n-1COOH}S 4, sulfuric acid P 1, hydrochloric acid P 2, caustic soda P 3,
Weight proportion is: S=lauryl amine S 1: mixed amine S 2: hydrochloric acid P 2=20~40: 20~40: 80~20P=ether amine S 3: aphthenic acids S 4: caustic soda P 3: sulfuric acid P 1=10~30: 20~50: 10~20: 60~10, SP=S: P=10~80: 90~20,
Described lauryl amine purity 〉=96%, mixed amine purity 〉=95%, hydrochloric acid concentration expressed in percentage by weight 〉=35%; Sulfuric acid concentration expressed in percentage by weight 〉=95%, caustic soda purity 〉=96%, ether amine purity 〉=98%, aphthenic acids purity 〉=98%.
Described above-mentioned formulation SP collecting agent, finish by the following method:
The compound method of S: first with hydrochloric acid P according to weight proportion 2Be divided equally into two fens, with a copy of it and lauryl amine S 1Stirring and evenly mixing and ageing 20min, another part and mixed amine S 2Stirring and evenly mixing and ageing 20min will get final product behind the still aging at normal temperatures and pressures 20min of both mixings stirring 5min again; The compound method of P: first with ether amine S according to weight proportion 3With aphthenic acids S 4The still aging 5min of mixing gets mixture, again with mixture and caustic soda P 3Mix back and sulfuric acid P 1Mixing, the still aging 10min of stirring and evenly mixing simultaneously; The compound method of SP: with S and P addition stirring and evenly mixing, treat that temperature is reduced to room temperature and promptly gets the collecting agent product after leaving standstill 20min according to weight proportion.
Compare advantage and good effect that the present invention has with known technology: association simultaneously has ores such as a spot of hematite-limonite, magnetic iron ore and pyrite to adopt the bulk flotation technological process at single siderite ore, can obtain grade TFe 〉=38%, the siderite concentrate index of iron recovery 75~86%.Bulk flotation technological process provided by the present invention is to have utilized the siderite collecting agent to carry out collecting, can make the surface of siderite and collecting agent that strong physical and chemical adsorption takes place, and can realize effectively separating of siderite and other ore.
Description of drawings: Fig. 1 is technological process of the present invention
The specific embodiment
Embodiment one: the siderite sample is from the somewhere, Yunnan, and sulphur, phosphorus, arsenic all do not exceed standard in this siderite raw ore, and the main element that reclaims is an iron in the ore, and other element does not reach the value of comprehensive recovery.The raw ore mineral content sees Table 1, and the raw ore chemical composition analysis sees Table 2.Adopting the bulk flotation technological process of Fig. 1, siderite is crushed to-below the 3mm, and mixing, by liquid-solid ratio=1: 2, ratio add the ball mill ore grinding, grinding particle size accounts for 85.38% for-0.074mm, the floating agent system: (1) siderite is roughly selected: calgon 300g/t, stir 4min, and sulfuric acid is transferred pH=5~6, stir 4min, SP collecting agent 600g/t stirs 3min, starch 600g/t, stir 3min, 2 #Oil 40g/t stirs 3min, inflates and scrape the selected I of bubble (2) siderite: starch 300g/t, stir 3min, 2 #Oil 20g/t stirs 3min, inflates and scrape the selected II of bubble (3) siderite: sulfuric acid is transferred pH=5~6, and starch 200g/t stirs 3min, 2 #Oil 15g/t stirs 3min, inflates and scrape the selected HI of bubble (4) sparring: sulfuric acid is transferred pH=5~6, stirs 3min, and starch 100g/t stirs 3min, 2 #Oil 6g/t stirs 3min, inflates and scrape bubble.Froth pulp through dehydrating to the moisture weight percentage be below 5%, siderite concentrate product.The index that is reached sees Table 4.
Used preparation equipment is: (single groove volume is 3m for ball mill Φ 900 * 1800mm, jaw crusher Φ 10 * 50mm and Φ 3 * 30mm, self-suction type flotation machine 3The manufacturing of)-Ciba Mine Machinery Factory, Kunming, spiral classifier Φ 2000mm, cyclone Φ 150mm.
Table 1 raw ore mineral content
Mineral Siderite Hematite-limonite Magnetic iron ore Ferrosilite Gangue and other
Content (%) 52.17 2.64 0.42 1.98 42.99
Table 2 raw ore chemical composition analysis
Project Fe S P As SiO 2
Content (%) 26.89 0.02 0.031 0.002 18.12
Table 3 flow process mineral processing index
The product title Productive rate (%) Iron grade (%) Iron recovery (%)
Siderite concentrate 57.23 39.01 83.00
Mine tailing 42.77 10.69 17.00
Give the ore deposit 100.00 26.90 100.00
Embodiment two: the siderite sample is from the somewhere, Yunnan, and sulphur, phosphorus, arsenic all do not exceed standard in this siderite raw ore, and the main element that reclaims is an iron in the ore, and other element does not reach the value of comprehensive recovery.The raw ore mineral content sees Table 4, and the raw ore chemical composition analysis sees Table 5.Adopt the bulk flotation technological process of Fig. 1, grinding particle size accounts for 88.78%, the floating agent system for-0.074mm: (1) siderite is roughly selected: calgon 400g/t, sulfuric acid is transferred pH=5~6, SP collecting agent 700g/t, starch 600g/t, 2 #Oil 40g/t inflation is also scraped the selected I of bubble (2) siderite: starch 400g/t, 2 #Oil 20g/t inflation is also scraped the selected II of bubble (3) siderite: sulfuric acid is transferred pH=5~6, starch 200g/t, 2 #Oil 15g/t, inflate and scrape the selected III of bubble (4) sparring: sulfuric acid is transferred pH=5~6, starch 200g/t,, 2 #Oil 6g/t inflates and scrapes bubble.Index sees Table 6.
Table 4 raw ore mineral content
Mineral Siderite Hematite-limonite Magnetic iron ore Ferrosilite Gangue and other
Content (%) 55.22 1.88 0.21 3.99 38.70
Table 5 raw ore chemical composition analysis
Project Fe S P As SiO 2
Content (%) 28.96 0.032 0.028 0.006 23.99
Table 6 flow process mineral processing index
The product title Productive rate (%) Iron grade (%) Iron recovery (%)
Siderite concentrate 60.17 40.02 83.15
Mine tailing 39.83 12.35 16.85
Give the ore deposit 100.00 28.96 100.00
Embodiment three: the siderite sample is from the somewhere, Gansu, and sulphur, phosphorus, arsenic all do not exceed standard in this siderite raw ore, and the main element that reclaims is an iron in the ore, and other element does not reach the value of comprehensive recovery.The raw ore mineral content sees Table 7, and the raw ore chemical composition analysis sees Table 8.Adopt the bulk flotation technological process of Fig. 1, grinding particle size-0.074mm accounts for 81.68%, the floating agent system: (1) siderite is roughly selected: calgon 400g/t, sulfuric acid is transferred pH=5~6, SP collecting agent 700g/t, starch 600g/t, 2 #Oil 40g/t inflation is also scraped the selected I of bubble (2) siderite: starch 400g/t, 2 #Oil 20g/t inflation is also scraped the selected II of bubble (3) siderite: sulfuric acid is transferred pH=5~6, starch 200g/t, 2 #Oil 15g/t, inflate and scrape the selected III of bubble (4) sparring: sulfuric acid is transferred pH=5~6, starch 200g/t, 2 #Oil 6g/t inflates and scrapes bubble.Mineral processing index sees Table 9.
Table 7 raw ore mineral content
Mineral Siderite Hematite-limonite Magnetic iron ore Ferrosilite Gangue and other
Content (%) 56.18 2.13 0.98 3.67 37.04
Table 8 raw ore chemical composition analysis
Project Fe S P As SiO 2
Content (%) 29.98 0.012 0.038 0.0052 21.88
Table 9 flow process mineral processing index
The product title Productive rate (%) Iron grade (%) Iron recovery (%)
Siderite concentrate 60.66 41.06 82.99
Mine tailing 39.34 12.97 17.01
Give the ore deposit 100.00 30.01 100.00

Claims (3)

1. single siderite full flotation mineral separation method, it is characterized in that finishing according to the following steps: will carry out the operation of one roughing triple cleaning behind the broken mill of siderite raw material, roughly select: size mixing as adjusting agent with calgon, improve the decentralization of ore pulp, its consumption is 300~600g/t, stir 3~6min, sulfuric acid is transferred pH=5~6, stirs 3~6min, adds starch as inhibitor, its consumption is 500~800g/t, stir 3~6min, add SP type siderite collecting agent, its consumption 400~800g/t, stir 3~6min, add 2 #Oil is as foaming agent, and its consumption is 10~40g/t, stirs 3~6min, inflates and scrape bubble, gets froth pulp I, enters the selected operation of next section; Selected froth pulp I: sulfuric acid is transferred pH=5~6, stirs 3~6min, and starch consumption 300~500g/t stirs 3~6min simultaneously, adds 2 #Oil 10~30g/t stirs 3~6min inflation and scrapes bubble, gets froth pulp II and enters the selected operation of next section; Selected II: sulfuric acid is transferred pH=5~6, stirs 3~6min, and starch consumption 200~400g/t stirs 3~6min simultaneously, adds 2 #Oil 10~20g/t stirs 3~6min inflation and scrapes bubble, gets froth pulp III and enters the selected operation of next section; The selected III of siderite: sulfuric acid is transferred pH=5~6, stirs 3~6min, and starch consumption 100~300g/t stirs 3~6min simultaneously, adds 2 #Oil 5~10g/t, bubble is scraped in inflation, and froth pulp is through getting siderite concentrate product after dehydrating.
2. single siderite full flotation mineral separation method according to claim 1, it is characterized in that: described broken mill is the siderite raw material to be crushed to-3mm and mixing, in solvent and solute weight ratio is that 1: 2 ratio adds the ball mill ore grinding, ore grinding to granularity for-0.074mm account for 75%~95% ,-0.100mm accounts for 100%.
3. single siderite full flotation mineral separation method according to claim 1 is characterized in that: described dehydrating is that froth pulp is dried to the moisture weight percentage is below 5%.
CN200810058371XA 2008-05-12 2008-05-12 Singleness siderite full flotation ore dressing method Expired - Fee Related CN101264465B (en)

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CN102274797A (en) * 2011-08-16 2011-12-14 鞍钢集团矿业公司 Sorting process capable of improving sorting indexes of siderite-containing ore
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CN104164557B (en) * 2014-09-05 2016-05-11 合肥工业大学 The method of the baking mixed preparation of a kind of pyrite and limonite taking magnetic iron ore as the porous structure material of main thing phase
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