CN102284345B - Separation method of main impure minerals of low-grade boron rock by utilizing cyclone separator - Google Patents
Separation method of main impure minerals of low-grade boron rock by utilizing cyclone separator Download PDFInfo
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- CN102284345B CN102284345B CN 201110132359 CN201110132359A CN102284345B CN 102284345 B CN102284345 B CN 102284345B CN 201110132359 CN201110132359 CN 201110132359 CN 201110132359 A CN201110132359 A CN 201110132359A CN 102284345 B CN102284345 B CN 102284345B
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Abstract
The invention relates to a separation method of main impure minerals of a low-grade boron rock by utilizing a cyclone separator. The method comprises the following steps: (1) crushing the boron rock with B2O3 content between 6.10 and 8.95 percent to obtain boron rock powder, preparing slurry from the boron rock powder and water or the boron rock powder and boron-containing mother solution in proportion, immersing to obtain slurry with the mass concentration between 15 and 50 percent; (2) transferring the slurry into a slurry tank in a cyclone separator, and stirring to uniformly mix the slurry; and (3) separating the slurry under a condition that the pressure of the material inlet of the cyclone separator is between 0.06 and 0.3Mpa to obtain an overflow material and an underflow material at an overflow port and an underflow port of the cyclone separator respectively. According to the separation method, primary separation of an acid waste ore and an alkali waste ore associated with the boron rock is realized, so that a manufacturer can produce borax by utilizing an acid waste associated ore as a principle material, and produce boric acid by utilizing an alkali waste associated ore as a principle material, so that the technical problem of further processing of the low-grade boron rock is fundamentally solved.
Description
Technical field
The present invention relates to lakebed low-grade boron ore process and utilization technology of large bavin dawn of Qinghai in the chemical field, relate in particular to the method for utilizing cyclone separator to separate low-grade boron ore major impurity mineral.
Background technology
Boron and compound thereof are important inorganic salt products, are mainly used in the raw materials such as glass, pottery.The characteristics of China's boron resource are: gross reserves is large, and 4,908 ten thousand tons of boron rock proved reserves occupy the 4th in the world; Narrow distribution range, but the boron rock of economic utilization is mainly boric acid salt mine and the Qinghai-Tibet liquid-solid body boron rock in Liaoning, other regional boron stock number is little, and industrial value is low.Large-scale development along with decades, the boron magnesium ore deposit of China's maximum---oneself is near exhausted for the solid boron resource in Liaoning at present, and the remaining boron rock with industrial value in the Northeast is the high ferro boron rock, this boron rock early stage is with the master that is utilized as of iron, the large cost of the difficulty of processing of boron is high, therefore, recent years, domestic boron product progressively turned on the exploitation of Tibet high-grade boric acid salt mine.But the utilization of this area's boron resource need to be exploited in the high altitude localities, and then long-distance transportation is to Qinghai or interior processing, and the ratio of its cost of winning, the shared totle drilling cost of cost of transportation is very huge.
Large bavin dawn lakebed boron rock reserves are pressed B
2O
3Meter reaches 406.0 ten thousand tons, belongs to super-huge boron deposit.One's early years are exploitation high-grade solid boron rock arbitrarily, this resource is damaged but also not serious, and these boron rock reserves still have more than 3,000,000 tons at present, has the resources advantage of development borax, boric acid production.The characteristics of this resource are: gross reserves is large, grade is lower, boron rock associated minerals kind is many, impurity content is high, particularly contains a large amount of gypsum and carbonate.Large lakeside, bavin dawn lake boron rock B
2O
3Content all is lower than 10% basically, part boron rock grade can reach 13～17%, content can directly utilize at the boron rock more than 15%, and content is complicated because of its composition at 6～9% low-grade boron ore, boron rock associated minerals kind is many, impurity content is high, particularly contain a large amount of gypsum and carbonate, being directly used in the processing of boron product exists production cost high, technological process is complicated, expense is high, the boron yield is low, the waste residue amount that processing produces is large, side reaction is many, the distintegrant consumption is high, the environmental issue of bringing in the production process is more, simultaneously large bavin dawn low-grade boron ore also has characteristics, namely along with the exploitation of high-grade boron rock, the variation in exploitation place, the composition of boron rock will have greatly changed, by with water side's boron rock, raphite is that main boron rock is converted into take pinnoite as main boron rock, the boron rock kind is different, its character is also different, and also not identical for the requirement of deep process condition, above-mentioned various reasons has limited the processing and utilization of low-grade boron ore.
Summary of the invention
Technical problem to be solved by this invention provides a kind of the realization and separates the method for low-grade boron ore major impurity mineral with the cyclone separator that utilizes of the acid ore deposit of the consumption of boron rock association and the initial gross separation in the alkaline ore deposit of consumption.
For addressing the above problem, a kind of method of utilizing cyclone separator to separate low-grade boron ore major impurity mineral of the present invention may further comprise the steps:
(1) with B
2O
3Content obtains boron ore powder after 6.10～8.95% boron ore powder is broken to 250～380 μ m; Described boron ore powder and water or described boron ore powder and boracic mother liquor are mixed with slip by 1: 1.5～1: 5 mass ratio, and soak 4～24h, obtain mass concentration and be 15～50% slip;
(2) described slip is changed over to slurry vessel in the cyclone separator, through stirring described slip is mixed;
(3) be under the condition of 0.06～0.3Mpa at described cyclone separator charging aperture pressure, described slip is separated, obtain respectively overflow material, underflow materials at overfall and the underflow opening of described cyclone separator.
Boracic mother liquor in the described step (1) refers to that described boron ore powder adds clear water through stirring, filter the solution of gained.
The present invention compared with prior art has the following advantages:
1, the present invention utilizes cyclone separator to separate consumption acid in the low-grade boron ore, the symbiosis of consumption alkali, associated minerals, successfully realized the initial gross separation with the acid ore deposit of the consumption of boron rock association and the alkaline ore deposit of consumption, so that manufacturer can utilize to consume the producing borax from boron ore that acid associated minerals are the master, utilization is to consume alkaline associated minerals as main boron rock production boric acid, decrease utilize low-grade boron ore to produce the acid and alkali consumption amount of boron product, fundamentally solve a low-grade boron ore deep process technology difficult problem, make the development and use of low-grade boron ore have obvious economic benefit.
2, separate in the major impurity ore deposit that the present invention be directed in the low-grade boron ore, and separation process need not to add industrial chemicals, belongs to cleaning procedure.
3, do not produce the waste containing boron that is dropped in the inventive method, this is obviously different than other existing boron rock processing method, and the boron yield is more than 95% in the processing procedure.
4, because the acid various carbonate of mineral of the consumption in the low-grade boron ore among the present invention and consumption alkali mineral gypsum obtain effective separation, therefore, can effectively simplify the low-grade boron ore Suggestion on Fine Processing, greatly reduce the generation of side reaction.
5, the present invention is not only applicable to large bavin dawn B
2O
3Content also is applicable to B simultaneously at 6.10～8.95% low-grade boron ore
2O
3The boron rock of content more than 10%.
The specific embodiment
Embodiment 1 utilizes cyclone separator to separate the method for low-grade boron ore major impurity mineral, may further comprise the steps:
(1) with B
2O
3Content is 6.97%, gypsum content is 43.23%, carbonate (comprising calcite, hydromagnesite) total amount is after 13.41% boron rock 3kg is crushed to 250 μ m, to obtain boron ore powder; Boron ore powder and water are mixed with slip by 1: 5 mass ratio, and soak 18h, obtain mass concentration and be 15% slip.
(2) slip is changed over to slurry vessel in the cyclone separator, through stirring slip is mixed.
(3) be under the condition of 0.1Mpa at cyclone separator charging aperture pressure, slip is separated and keep separation process charging aperture pressure stability, overfall and the underflow opening at cyclone separator obtains respectively overflow material, underflow materials at last.Wherein the overflow material is B
2O
3The boron rock of content 5.62%, total carbonate content 39.2%, gypsum content 3.04%; Underflow materials is B
2O
3The boron rock of content 7.89%, total carbonate content 4.05%, gypsum content 50.23%.
Embodiment 2 utilizes cyclone separator to separate the method for low-grade boron ore major impurity mineral, may further comprise the steps:
(1) with B
2O
3Content is 7.82%, gypsum content is 38.02%, carbonate (comprising calcite, hydromagnesite) total amount is after 23.17% boron rock 3kg is crushed to 380 μ m, to obtain boron ore powder; Boron ore powder and water are mixed with slip by 1: 2 mass ratio, and soak 6h, obtain mass concentration and be 25% slip.
(2) slip is changed over to slurry vessel in the cyclone separator, through stirring slip is mixed.
(3) be under the condition of 0.06Mpa at cyclone separator charging aperture pressure, slip is separated and keep separation process charging aperture pressure stability, overfall and the underflow opening at cyclone separator obtains respectively overflow material, underflow materials at last.Wherein the overflow material is B
2O
3The boron rock of content 6.92%, total carbonate content 34.2%, gypsum content 4.56%; Underflow materials is B
2O
3The boron rock of content 8.03%, total carbonate content 7.86%, gypsum content 41.5%.
Embodiment 3 utilizes cyclone separator to separate the method for low-grade boron ore major impurity mineral, may further comprise the steps:
(1) with B
2O
3Content is 8.40%, gypsum content is 31.27%, carbonate (comprising calcite, hydromagnesite) total amount is after 16.58% boron rock 3kg is crushed to 300 μ m, to obtain boron ore powder; Boron ore powder and water are mixed with slip by 1: 4 mass ratio, and soak 24h, obtain mass concentration and be 20% slip.
(2) slip is changed over to slurry vessel in the cyclone separator, through stirring slip is mixed.
(3) be under the condition of 0.25Mpa at cyclone separator charging aperture pressure, slip is separated and keep separation process charging aperture pressure stability, overfall and the underflow opening at cyclone separator obtains respectively overflow material, underflow materials at last.Wherein the overflow material is B
2O
3The boron rock of content 6.95%, total carbonate content 35.02%, gypsum content 5.12%; Underflow materials is B
2O
3The boron rock of content 10.05%, total carbonate content 7.26%, gypsum content 37.54%.
Embodiment 4 utilizes cyclone separator to separate the method for low-grade boron ore major impurity mineral, may further comprise the steps:
(1) with B
2O
3Content is 6.10%, gypsum content is 39.28%, carbonate (comprising calcite, hydromagnesite) total amount is after 15.76% boron rock 3kg is crushed to 350 μ m, to obtain boron ore powder; Boron ore powder and boracic mother liquor are mixed with slip by 1: 1.5 mass ratio, and soak 12h, obtain mass concentration and be 40% slip.
The boracic mother liquor refers to that boron ore powder adds clear water through stirring, filter the solution of gained.
(2) slip is changed over to slurry vessel in the cyclone separator, through stirring slip is mixed.
(3) be under the condition of 0.2Mpa at cyclone separator charging aperture pressure, slip is separated and keep separation process charging aperture pressure stability, overfall and the underflow opening at cyclone separator obtains respectively overflow material, underflow materials at last.Wherein the overflow material is B
2O
3The boron rock of content 5.50%, total carbonate content 30.56%, gypsum content 6.01%; Underflow materials is B
2O
3The boron rock of content 7.38%, total carbonate content 5.01%, gypsum content 42.65%.
Embodiment 5 utilizes cyclone separator to separate the method for low-grade boron ore major impurity mineral, may further comprise the steps:
(1) with B
2O
3Content is 8.95%, gypsum content is 41.20%, carbonate (comprising calcite, hydromagnesite) total amount is after 21.32% boron rock 3kg is crushed to 280 μ m, to obtain boron ore powder; Boron ore powder and boracic mother liquor are mixed with slip by 1: 3 mass ratio, and soak 4h, obtain mass concentration and be 50% slip.
(2) slip is changed over to slurry vessel in the cyclone separator, through stirring slip is mixed.
(3) be under the condition of 0.3Mpa at cyclone separator charging aperture pressure, slip is separated and keep separation process charging aperture pressure stability, overfall and the underflow opening at cyclone separator obtains respectively overflow material, underflow materials at last.Wherein the overflow material is B
2O
3The boron rock of content 7.26%, total carbonate content 38.76%, gypsum content 7.62%; Underflow materials is B
2O
3The boron rock of content 11.43%, total carbonate content 5.21%, gypsum content 52.31%.
Claims (2)
1. utilize cyclone separator to separate the method for low-grade boron ore major impurity mineral, may further comprise the steps:
(1) with B
2O
3Content is 8.95%, gypsum content is 41.20%, the carbonate total amount is after 21.32% pinnoite boron rock 3kg is crushed to 280 μ m, to obtain boron ore powder; Boron ore powder and boracic mother liquor are mixed with slip by 1: 3 mass ratio, and soak 4h, obtain mass concentration and be 50% slip;
(2) slip is changed over to slurry vessel in the cyclone separator, through stirring slip is mixed;
(3) be under the condition of 0.3Mpa at cyclone separator charging aperture pressure, slip is separated and keep separation process charging aperture pressure stability, overfall and the underflow opening at cyclone separator obtains respectively overflow material, underflow materials at last; Wherein the overflow material is B
2O
3The boron rock of content 7.26%, total carbonate content 38.76%, gypsum content 7.62%; Underflow materials is B
2O
3The boron rock of content 11.43%, total carbonate content 5.21%, gypsum content 52.31%.
2. the method for utilizing cyclone separator to separate low-grade boron ore major impurity mineral as claimed in claim 1, it is characterized in that: the boracic mother liquor in the described step (1) refers to that described boron ore powder adds clear water through stirring, filter the solution of gained.
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| CN103316756B (en) * | 2013-07-03 | 2014-12-10 | 邹定邦 | Fluidization overflow method for manufacturing boron concentrates richly containing boron-10 |
| CN103991878B (en) * | 2014-05-19 | 2016-02-10 | 中国科学院青海盐湖研究所 | The enriching method of low-grade native borax and system |
Citations (4)
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| CN2427511Y (en) * | 2000-03-24 | 2001-04-25 | 张茂 | Apparatus for heating and purifying ore contg. boron |
| US20010021740A1 (en) * | 1999-08-31 | 2001-09-13 | Advanced Ceramics Corporation | Low viscosity filler composition of boron nitride particles of spherical geometry and process |
| CN1320484A (en) * | 2001-03-19 | 2001-11-07 | 李洪岭 | Process for concentrating low-grade boron ore |
| CN101069794A (en) * | 2007-03-22 | 2007-11-14 | 吉林市恒昌过滤机械有限公司 | Boron-ore-slurry solid-liquid separation method |
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- 2011-05-16 CN CN 201110132359 patent/CN102284345B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010021740A1 (en) * | 1999-08-31 | 2001-09-13 | Advanced Ceramics Corporation | Low viscosity filler composition of boron nitride particles of spherical geometry and process |
| CN2427511Y (en) * | 2000-03-24 | 2001-04-25 | 张茂 | Apparatus for heating and purifying ore contg. boron |
| CN1320484A (en) * | 2001-03-19 | 2001-11-07 | 李洪岭 | Process for concentrating low-grade boron ore |
| CN101069794A (en) * | 2007-03-22 | 2007-11-14 | 吉林市恒昌过滤机械有限公司 | Boron-ore-slurry solid-liquid separation method |
Non-Patent Citations (2)
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| 低品位硼矿的加工利用;董亚萍等;《IM&P 化工矿物与加工》;20090215(第2期);43-44 * |
| 水力旋流器富集大柴旦盐湖硼矿物的研究;黄铭勋等;《中南矿冶学院学报》;19801231(第4期);94-102 * |
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