CN102876904B - Method for leaching beryllium from beryllium minerals of bertrandite - Google Patents
Method for leaching beryllium from beryllium minerals of bertrandite Download PDFInfo
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- CN102876904B CN102876904B CN201210407979.5A CN201210407979A CN102876904B CN 102876904 B CN102876904 B CN 102876904B CN 201210407979 A CN201210407979 A CN 201210407979A CN 102876904 B CN102876904 B CN 102876904B
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Abstract
A method for leaching beryllium from beryllium minerals of bertrandite includes steps of A, crushing and ball-milling: crushing bertrandite ores after ball-milling so that the particle size of the ores is smaller than 200 meshes after ball-milling; B, pretreatment: placing concentrated sulfuric acid with the concentration higher than 98% and the ores after ball-milling into a stirring pool to uniformly mix the concentrated sulfuric acid with the ores; C, leaching: taking the pretreated ores from the stirring pool and placing the pretreated ores in a leaching pool for leaching, and adding tap water into the leaching pool to stir the ores when ores are cooled and the temperature of the ores ranges from 80 DEG C to 100 DEG C; and D, solid-liquid separation: separating solid from liquid to obtain beryllium leachate after leaching is completed, washing slag by tap water and recycling and leaching washing liquor. In the step B, the heat-insulation processing time at the temperature of 180 DEG C is not shorter than four hours, and the mass ratio of the concentrated sulfuric acid to the ores is 0.8-1:1. In the step C, the stirring and leaching time at the normal temperature is not shorter than 4 hours, and the mass ratio of the added tap water to the ores is 2-5:1. In the step D, the mass ratio of the consumed tap water to the ores is 1-2:1.
Description
Technical field
The present invention relates to technical field of wet metallurgy, particularly a kind of method that leaches beryllium from bertrandite class beryllium ore deposit.
Background technology
Berryllium mineral is mainly bertrandite, a small amount of phenakite, and gangue mineral is mainly quartz, albite, potassium felspar sand, sericite, chlorite, a small amount of mineral such as fluorite and limonite.The occurrence status of beryllium, mainly take bertrandite as main, is secondly present in magnetite and limonite with forms such as absorption on a small quantity, and in addition minute quantity is present among the clay minerals such as kaolin, Erie's mica, chlorite with adsorption form.Bertrandite exists with the form of idiomorphic crystal subhedral crystal, is often tiny tabular and styloid, is mainly distributed among Fluorite Veins, and main and intense violet color fluorite symbiosis, is irregular, sheet, and ［ crystal-chemical formula is Be for subhedral or its shape bertrandite
4[Si
2o
7] (OH)
2for topmost containing berryllium mineral in ore, mainly exist with several forms: the one, bertrandite, in rock, exists with the form of idiomorphic crystal subhedral crystal, is often tiny tabular and styloid, general mineral grain size is 20 ~ 300 μ m, is mainly distributed among Fluorite Veins; The 2nd, bertrandite is wrapped among Fluorite Veins, is often wire contact relation with fluorite particle.Normal and the intense violet color of bertrandite, the symbiosis of purple fluorite.
At present, produce beryllium both at home and abroad and mainly contain two kinds of smelting processes, i.e. fluorination method and sulfuric acid process, these two kinds of smelting processes respectively have relative merits, and have the example of employing.The processing method that China adopts is at present sulfuric acid process, add flux smelting process, its technical process is: beryllium+calcite → melting (1400 ~ 1700 ℃) → sulfuric acid acidation leaches (50%) → evaporative crystallization → neutralized ex iron → precipitation → beryllium hydroxide → calcining → BeO.Adopt Production By Sulfuric Acid Process beryllium to need high temperature (1400 ~ 1700 ℃) melting, energy expenditure when pyrolytic decomposition and calcite consumption are large, technical process complexity, and production cost is high.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and a kind of method that leaches beryllium from bertrandite class beryllium ore deposit is provided.
Technical scheme of the present invention is: a kind of method that leaches beryllium from bertrandite class beryllium ore deposit, carry out according to the following steps:
A, broken ball milling: by ball milling after the fragmentation of hydroxyl silicon beryllium, after ball milling, ore grain size is less than 200 orders.
B, pre-treatment: concentration is greater than to 98% the vitriol oil and puts into agitated pool with the ore after ball milling and mix, under the temperature condition of 180 ℃, the insulation treatment time is no less than 4 hours, and the mass ratio of the vitriol oil and ore is 0.8～1:1.
C, leaching: pretreated ore is taken out from agitated pool put into leach pond leach, in the time that ore temperature is reduced to 80 ~ 100 ℃, add tap water to stir, under normal temperature, the agitation leach time is not less than 4 hours, and tap water add-on is 2～5:1 with ore quality ratio.
D, solid-liquid separation: after leaching and finishing, carry out solid-liquid separation, obtain beryllium leach liquor, wash slag with tap water, tap water consumption is 1～2:1 with ore quality ratio, and washing lotion is returned to leaching.
The present invention compared with prior art has following features:
The present invention has fundamentally changed original extract technology, avoid high temperature (1400～1700 ℃) melting decomposition course, energy expenditure while having reduced pyrolytic decomposition, save calcite, improved operating environment, had technical process simple, energy consumption is low, the feature saving production cost, and the leaching yield of beryllium exceedes 85%.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is process flow sheet of the present invention.
Embodiment
Embodiment mono-, a kind of method that leaches beryllium from bertrandite class beryllium ore deposit, carry out according to the following steps:
A, broken ball milling: by ball milling after the fragmentation of hydroxyl silicon beryllium, ore grain size-200 order after ball milling.
B, pre-treatment: the vitriol oil that is 98% by concentration is put into agitated pool with the ore after ball milling and mixed, under the temperature condition of 180 ℃, in 4 hours treatment times of insulation, the mass ratio of the vitriol oil and ore is 1:1.
C, leaching: pretreated ore is taken out from agitated pool put into and leach pond and leach, in the time that ore temperature is reduced to 80 ℃, add tap water to stir, agitation leach 4 hours under normal temperature, tap water add-on and ore quality are than being 1:1.
D, solid-liquid separation: after leaching and finishing, carry out solid-liquid separation, obtain beryllium leach liquor, wash slag with tap water, tap water consumption is with ore quality than being 2:1, and washing lotion is returned to leaching.
Embodiment bis-, a kind of method that leaches beryllium from bertrandite class beryllium ore deposit, carry out according to the following steps:
A, broken ball milling: by ball milling after the fragmentation of hydroxyl silicon beryllium, ore grain size-200 order after ball milling.
B, pre-treatment: the vitriol oil that is 98% by concentration is put into agitated pool with the ore after ball milling and mixed, under the temperature condition of 180 ℃, in 6 hours treatment times of insulation, the mass ratio of the vitriol oil and ore is 0.9:1.
C, leaching: pretreated ore is taken out from agitated pool put into and leach pond and leach, in the time that ore temperature is reduced to 90 ℃, add tap water to stir, agitation leach 6 hours under normal temperature, tap water add-on and ore quality are than being 3:1.
D, solid-liquid separation: after leaching and finishing, carry out solid-liquid separation, obtain beryllium leach liquor, wash slag with tap water, tap water consumption is with ore quality than being 1:1, and washing lotion is returned to leaching.
Embodiment tri-, a kind of method that leaches beryllium from bertrandite class beryllium ore deposit, carry out according to the following steps:
A, broken ball milling: by ball milling after the fragmentation of hydroxyl silicon beryllium, ore grain size-200 order after ball milling.
B, pre-treatment: the vitriol oil that is 98% by concentration is put into agitated pool with the ore after ball milling and mixed, under the temperature condition of 180 ℃, in 8 hours treatment times of insulation, the mass ratio of the vitriol oil and ore is 0.8:1.
C, leaching: pretreated ore is taken out from agitated pool put into and leach pond and leach, in the time that ore temperature is reduced to 100 ℃, add tap water to stir, agitation leach 10 hours under normal temperature, tap water add-on and ore quality are than being 5:1.
D, solid-liquid separation: after leaching and finishing, carry out solid-liquid separation, obtain beryllium leach liquor, wash slag with tap water, tap water consumption is with ore quality than being 1:1, and washing lotion is returned to leaching.
Claims (1)
1. a method that leaches beryllium from bertrandite class beryllium ore deposit, is characterized in that: carry out according to the following steps:
A, broken ball milling: by ball milling after the fragmentation of hydroxyl silicon beryllium, after ball milling, ore grain size is less than 200 orders;
B, pre-treatment: concentration is greater than to 98% the vitriol oil and puts into agitated pool with the ore after ball milling and mix, under the temperature condition of 180 ℃, the insulation treatment time is no less than 4 hours, and the mass ratio of the vitriol oil and ore is 0.8～1:1;
C, leaching: pretreated ore is taken out from agitated pool put into leach pond leach, in the time that ore temperature is reduced to 80 ~ 100 ℃, add tap water to stir, under normal temperature, the agitation leach time is not less than 4 hours, and tap water add-on is 2～5:1 with ore quality ratio;
D, solid-liquid separation: after leaching and finishing, carry out solid-liquid separation, obtain beryllium leach liquor, wash slag with tap water, tap water consumption is 1～2:1 with ore quality ratio, and washing lotion is returned to leaching.
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| CN201210407979.5A CN102876904B (en) | 2012-10-24 | 2012-10-24 | Method for leaching beryllium from beryllium minerals of bertrandite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105585034A (en) * | 2016-01-13 | 2016-05-18 | 南华大学 | Method for preparing high-purity beryllium hydroxide from low-purity beryllium hydroxide |
| CN105734282A (en) * | 2016-03-15 | 2016-07-06 | 香花岭锡业有限责任公司 | Method for leaching beryllium in alumoberyl type beryllium ore |
| CN106521192B (en) * | 2016-10-10 | 2019-03-29 | 南华大学 | The method of beryllium is leached from low-grade bertrandite using Microwave Pretreatment |
| CN109761514B (en) * | 2019-02-14 | 2021-05-14 | 长沙中硅环保科技有限公司 | Beryllium slag detoxification and cement kiln cooperative recycling treatment system and process |
| CN115927847A (en) * | 2022-11-03 | 2023-04-07 | 核工业北京化工冶金研究院 | Method for leaching beryllium in bertrandite-type beryllium ore |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185486A (en) * | 1996-12-18 | 1998-06-24 | 水口山矿务局第六冶炼厂 | Process for preparing industrial beryllium oxide and mixed rare-earth hydroxy compound by using silicon-beryllium-yttium ore |
| CN102659155A (en) * | 2012-04-25 | 2012-09-12 | 吉林大学 | Low-temperature acid soluble method for leaching alumina from fly ash |
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| CN102168184B (en) * | 2011-05-27 | 2012-10-24 | 广州有色金属研究院 | Method for extracting beryllium oxide from low-grade beryllium ore |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185486A (en) * | 1996-12-18 | 1998-06-24 | 水口山矿务局第六冶炼厂 | Process for preparing industrial beryllium oxide and mixed rare-earth hydroxy compound by using silicon-beryllium-yttium ore |
| CN102659155A (en) * | 2012-04-25 | 2012-09-12 | 吉林大学 | Low-temperature acid soluble method for leaching alumina from fly ash |
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