CN103395791A - Mineral processing and deep purification method for quartz sand - Google Patents
Mineral processing and deep purification method for quartz sand Download PDFInfo
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- CN103395791A CN103395791A CN2013103551270A CN201310355127A CN103395791A CN 103395791 A CN103395791 A CN 103395791A CN 2013103551270 A CN2013103551270 A CN 2013103551270A CN 201310355127 A CN201310355127 A CN 201310355127A CN 103395791 A CN103395791 A CN 103395791A
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- quartz sand
- acid
- quartz
- digestion
- mineral processing
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Abstract
The invention discloses a mineral processing and deep purification method for quartz sand. The method comprises the following steps of (a) during the scrubbing of the quartz sand in an acid-digestion scrubbing machine, adding a sulfuric acid solution with the weight concentration of 15-60% for acid digestion, wherein the weight ratio of the quartz sand to the sulfuric acid solution is 25-65%, the temperature for acid digestion is 50-135 DEG C, the time for acid digestion is 20-90 minutes, and sulfuric acid can quickly react with iron-bearing minerals in the quartz sand through the organic combination of the mechanical scrubbing and acid digestion of the quartz sand; and (b) after acid digestion, separating the quartz sand from filtrate through filtrating, wherein the filtrate can be recycled, and products with Fe2O3 content meeting requirements are obtained after the quartz sand is cleaned. The method has the beneficial effects that aims which can not be achieved by the conventional mineral processing methods are realized, the dependence on high-quality siliceous resources is lowered, and the utility value of the quartz sand products is increased; and the method can also be applied to the field of the mineral processing and purification of non-metallic minerals, such as quartz fine (tail) sand, feldspar and the like.
Description
Technical field
The present invention relates to a kind of quartz sand ore dressing degree of depth method of purification, utilize H under warm-up mode
2SO
4Generate water-soluble Fe with the rapid reaction of ubiquitous ferrous contaminants mineral in quartz
2(SO
4)
3Or FeSO
4And be removed.
Background technology
Quartzy (sand) is a kind of important industrial mineral raw material, is widely used in the fields such as glass, pottery, metallurgy, building, electrotechnical, electronic, aerospace, wherein Fe
2O
3Content is the key factor that affects quartz sand quality product and use value thereof.Follow the development of science and technology and the progress of society, the high-tech areas such as electrotechnical, electronic, semi-conductor, aerospace are more and more higher to the requirement of crystal quality, in continuous increase, and the quartz mine resource of high-quality is day by day exhausted to the demand of high-purity (low iron) quartz sand.The conventional ore dressing method of purification of quartz sand has the techniques such as classification, desliming, magnetic separation, gravity treatment, flotation, but the iron-bearing mineral that generally can only separating monomer dissociates, remain in red, limonite, sull in quartz sand surface and crack, the quartz mineral intergrowth of iron content etc. is to affect glass sand Fe
2O
3The key that content reduces, therefore, address the above problem promoting quartz sand ore dressing degree of depth purification techniques, realizes the senior reasonable utilization of quartz mine resource, has important practical significance.
Summary of the invention
Purpose of the present invention is exactly the higher defect of quartz sand iron-holder that exists in order to solve existing quartz sand ore dressing degree of depth method of purification, a kind of quartz sand ore dressing degree of depth method of purification that provides.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of quartz sand ore dressing degree of depth method of purification is characterized in that comprising the following steps:
A, quartz sand boil in the scouring process of scrubber in acid, adding weight concentration is that 15～60% sulphuric acid soln carries out acid and boils, the weight ratio of quartz sand and sulphuric acid soln is 25～65%, it is 50～135 ℃ that temperature is boiled in acid, the acid time of boiling is 20～90min, quartz sand mechanical scrub and acid are boiled combination, realize the rapid reaction of iron-bearing mineral in sulfuric acid and quartz sand;
After b, acid are boiled, by filtering, quartz sand is separated with filtrate, filtrate can recycle, and quartz sand obtains Fe after cleaning
2O
3The product that content meets the requirements.
Method of the present invention also can be applicable to the deironing of feldspar and other non-metallic minerals and purifies.
In technical scheme of the present invention, it can be known scrubber that scrubber is boiled in described acid, as long as acidproof just passable.Described acid is boiled, and namely heats acid solution and quartz sand mixed solution.
The present invention mainly utilizes ferrous contaminants mineral in quartz to generate water-soluble ferrous sulfate or ferric sulfate (reacting as follows) with the sulfuric acid rapid reaction under warm-up mode:
(rhombohedral iron ore) Fe
2O
3+ H
2SO
4=Fe
2(SO
4)
3+ H
2O
(spathic iron ore) FeCO
3+ H
2SO
4=FeSO
4+ CO
2+ H
2O
(magnetite) Fe
3O
4+ 4H
2SO
4=Fe
2(SO
4)
3+ FeSO
4+ 4H
2O
(limonite) 2FeO(OH) .nH
2O+3H
2SO
4=Fe
2(SO
4)
3+ (n+4) H
2O etc.
And quartz not with sulfuric acid reaction and water insoluble, therefore quartz is separated with iron-bearing mineral.At first this acid treatment organically combines mechanical scrub and acidleach under the condition of high temperature, dissolve fast in quartz sand, the iron-bearing mineral in quartz sand surface and crystal crack; Then, by filtering and cleaning, effectively reduce the Fe in quartz sand
2O
3Content;
Beneficial effect of the present invention
1, this technique degree of depth of can be used for high-purity (low iron) quartz sand is purified, and realizes the conventional beneficiation method target that is beyond one's reach, and has reduced the degree of dependence to high-quality siliceous resource, has improved the utility value of quartz sand product;
2, expand quartz sand ore dressing degree of depth method of purification, promoted technical progress of industry;
3, this technique also can be applicable to the nonmetalliferous ore ore dressing purification fields such as quartzy thin (tail) sand and feldspar.
Embodiment:
The present invention elaborates to the present invention by the listed embodiment of following table.
The embodiment table look-up
Annotate: 1, operation productive rate refers to that acid boils the rate of recovery of material after operation.For example: operation productive rate 99.5% refers to obtain 99.5kg after the acid of 100kg material is boiled loss 0.5kg.
2, sour boiling down degree, refer to the weight ratio of quartz sand and sulphuric acid soln.
Claims (2)
1. quartz sand ore dressing degree of depth method of purification is characterized in that comprising the following steps:
A, quartz sand boil in the scouring process of scrubber in acid, adding weight concentration is that 15～60% sulphuric acid soln carries out acid and boils, the weight ratio of quartz sand and sulphuric acid soln is 25～65%, it is 50～135 ℃ that temperature is boiled in acid, the acid time of boiling is 20～90min, quartz sand mechanical scrub and acid are boiled combination, realize the rapid reaction of iron-bearing mineral in sulfuric acid and quartz sand;
After b, acid are boiled, by filtering, quartz sand is separated with filtrate, filtrate can recycle, and quartz sand obtains Fe after cleaning
2O
3The product that content meets the requirements.
2. a kind of quartz sand ore dressing degree of depth method of purification described according to claims 1 is characterized in that: the method also can be applicable to the deironing of feldspar and other non-metallic minerals and purifies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103551270A CN103395791A (en) | 2013-08-15 | 2013-08-15 | Mineral processing and deep purification method for quartz sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103551270A CN103395791A (en) | 2013-08-15 | 2013-08-15 | Mineral processing and deep purification method for quartz sand |
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| Publication Number | Publication Date |
|---|---|
| CN103395791A true CN103395791A (en) | 2013-11-20 |
Family
ID=49559589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103551270A Pending CN103395791A (en) | 2013-08-15 | 2013-08-15 | Mineral processing and deep purification method for quartz sand |
Country Status (1)
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|---|---|
| CN (1) | CN103395791A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167597A (en) * | 2019-12-31 | 2020-05-19 | 上杭鑫昌龙实业有限公司 | Deep purification method and equipment for quartz tailing slime |
| CN111204768A (en) * | 2020-01-09 | 2020-05-29 | 上杭鑫昌龙实业有限公司 | Method and device for treating waste acid leached by acid in purification process of quartz tailings |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053912A (en) * | 1990-02-10 | 1991-08-21 | 嵊县硅藻土应用研究所 | method for purifying diatomite |
-
2013
- 2013-08-15 CN CN2013103551270A patent/CN103395791A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053912A (en) * | 1990-02-10 | 1991-08-21 | 嵊县硅藻土应用研究所 | method for purifying diatomite |
Non-Patent Citations (1)
| Title |
|---|
| 于震宗等: "铸造原砂擦洗脱泥处理的研究", 《清华大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167597A (en) * | 2019-12-31 | 2020-05-19 | 上杭鑫昌龙实业有限公司 | Deep purification method and equipment for quartz tailing slime |
| CN111167597B (en) * | 2019-12-31 | 2021-07-27 | 深圳市鑫昌龙新材料研究所有限公司 | Deep purification method and equipment for quartz tailing slime |
| CN111204768A (en) * | 2020-01-09 | 2020-05-29 | 上杭鑫昌龙实业有限公司 | Method and device for treating waste acid leached by acid in purification process of quartz tailings |
| CN111204768B (en) * | 2020-01-09 | 2022-11-11 | 上杭鑫昌龙实业有限公司 | Method and device for treating waste acid leached by acid in quartz tailing purification process |
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Application publication date: 20131120 |