CN1094996A - The dressing method of giobertite - Google Patents
The dressing method of giobertite Download PDFInfo
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- CN1094996A CN1094996A CN 93111130 CN93111130A CN1094996A CN 1094996 A CN1094996 A CN 1094996A CN 93111130 CN93111130 CN 93111130 CN 93111130 A CN93111130 A CN 93111130A CN 1094996 A CN1094996 A CN 1094996A
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- magnetic separation
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- giobertite
- dressing method
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Abstract
The invention belongs to the new dressing method of magnesite, carry out selectivity roasting (light-burned) earlier before it is characterized in that being selected in, adopt the combined process flow of methods such as electric separation, flotation, magnetic separation, gravity treatment then.Can burn about 50% raw ore amount like this before selected, reduce selected amount, dwindle the scale of founding the factory, it is about 50% to reduce the investment of founding the factory, and can reduce production costs 40～50%, and smart spacious grade and top grade product productive rate be raising greatly also.
Description
The invention belongs to a kind of dressing method of giobertite.Because the various carbonate minerals of association in the giobertite, to sort performance more approaching as sort performance (as floatability, density, magnetic, electrical etc.) and the magnesite of the mineral such as carbonate of calcite, dolomite, aragonite and iron content, it is very difficult therefrom to select high-purity MgO, low-quality giobertite particularly, with present mineral processing circuit, very difficult acquisition is sorting index preferably.As certain flotation workshop, magnesium ore deposit, concentrate grade only improves 0.5% than head grade, and the concentrate yield of MgO＞98% is still not high.
Do not find the beneficiation method of giobertite identical with the present invention or that be close by retrieval.
Purpose of the present invention designs the new beneficiation method of a kind of giobertite that is applicable to, particularly low-quality giobertite exactly, and this method can reduce capital expenditure, reduces production cost, improves concentrate grade, improve top grade product productive rate.
The present invention is a heat decomposition temperature difference of utilizing the various mineral of giobertite, is chosen in roasting under 700～850 ℃ of conditions according to ore character, and iron-bearing carbonate decomposites CO
2With the stronger iron-bearing mineral of generation magnetic, quartz and CaCO
3Mineral do not decompose, and the magnesite mineral decomposite CO
2, generate the strong periclase (MgO) of hydrophily, and density increases and electrically changes.
Feature of the present invention is selected preceding first roasting, carries out dry high-magnetic separation and grading electric selection after the dehydration again.After the ore roasting, before dehydration, can adopt different combined process flows according to the character of various giobertites.Figure one is general process scheme figure of the present invention.Be whole ore roasting, dry grinding, dry type magnetic separation, grading electric selection, wet-milling, classification, flotation, low intensity magnetic separation, high intensity magnetic separation, gravity treatment, dehydration, dry high-magnetic separation, grading electric selection, the output concentrate.
Good effect of the present invention: because magnesite discharges CO through roasting
2, selected amount is reduced, dwindle the scale of founding the factory, it is about 50% to reduce the investment of founding the factory, and also can reduce production costs 40～50%, and concentrate grade can reach 98～99%, and top grade product productive rate also can improve greatly.
Accompanying drawing one is magnesite ore dressing general process scheme figure of the present invention.
Accompanying drawing two is the process chart of the ore dressing of certain ore deposit giobertite.
Embodiment: as accompanying drawing two is the process chart of the ore dressing of certain ore deposit giobertite.Sintering temperature is 800 ℃.
Claims (2)
1, the present invention is a kind of dressing method of magnesite.It is made up of roasting, dry grinding, dry high-magnetic separation, grading electric selection, wet-milling, classification, flotation, low intensity magnetic separation, high intensity magnetic separation, gravity treatment, dehydration, dry high-magnetic separation, electric separation link, it is characterized in that raw ore carries out earlier carrying out dry high-magnetic separation, grading electric selection again after roasting and the dehydration before selected;
2, the dressing method of magnesite according to claim 1 is characterized in that selected preceding sintering temperature is 700～850 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111130 CN1094996A (en) | 1993-05-12 | 1993-05-12 | The dressing method of giobertite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111130 CN1094996A (en) | 1993-05-12 | 1993-05-12 | The dressing method of giobertite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1094996A true CN1094996A (en) | 1994-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93111130 Pending CN1094996A (en) | 1993-05-12 | 1993-05-12 | The dressing method of giobertite |
Country Status (1)
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| CN (1) | CN1094996A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100490981C (en) * | 2006-05-30 | 2009-05-27 | 长沙矿冶研究院 | Beneficiation method for weak magnetic iron ores such as siderite, limonite and siderite paragenetic ore |
| CN103252285A (en) * | 2012-02-15 | 2013-08-21 | 沈阳铝镁设计研究院有限公司 | Ore grinding technology for magnesite |
| CN104437883A (en) * | 2014-11-13 | 2015-03-25 | 中蓝连海设计研究院 | Digestion-desliming-reverse floatation method for treatment of low-grade magnesite high in silicon content and calcium content |
| CN104513033A (en) * | 2013-09-26 | 2015-04-15 | 沈阳铝镁设计研究院有限公司 | Technology of producing high purity magnesium oxide from low-grade magnesite |
| CN104511368A (en) * | 2013-09-26 | 2015-04-15 | 沈阳铝镁设计研究院有限公司 | Low-grade magnesite purifying process |
| CN106179731A (en) * | 2016-07-19 | 2016-12-07 | 中化化肥有限公司成都研发中心 | Sesquichloride and the method for magnesium in high-gradient magnetic separation single reverse flotation coupling abjection phosphorus ore |
| CN107365905A (en) * | 2017-07-11 | 2017-11-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Closed circuit shower furnace is calcined dry grinding dry separation craft to a kind of refractory iron ore online |
| CN107694950A (en) * | 2017-11-09 | 2018-02-16 | 中国矿业大学 | A kind of dry separation technique based on friction electrical selection purification magnesite |
| CN108672092A (en) * | 2018-05-16 | 2018-10-19 | 东北大学 | The process for effectively purifying of the low grade shepardite of high-silicon high calcium high ferro |
| CN109127114A (en) * | 2018-09-21 | 2019-01-04 | 大连地拓环境科技有限公司 | A kind of low-grade magnesite method of comprehensive utilization |
| CN110142134A (en) * | 2019-05-16 | 2019-08-20 | 辽宁万隆科技研发有限公司长沙分公司 | A kind of method of iron ore country rock comprehensive utilization |
| CN112474026A (en) * | 2020-11-16 | 2021-03-12 | 福州大学 | Magnesite acid triggering-spiral chute preselecting method |
| CN112551921A (en) * | 2020-11-25 | 2021-03-26 | 海城远东矿业有限公司 | Carbonization activation beneficiation technology for high-silicon magnesite |
-
1993
- 1993-05-12 CN CN 93111130 patent/CN1094996A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100490981C (en) * | 2006-05-30 | 2009-05-27 | 长沙矿冶研究院 | Beneficiation method for weak magnetic iron ores such as siderite, limonite and siderite paragenetic ore |
| CN103252285A (en) * | 2012-02-15 | 2013-08-21 | 沈阳铝镁设计研究院有限公司 | Ore grinding technology for magnesite |
| CN104511368A (en) * | 2013-09-26 | 2015-04-15 | 沈阳铝镁设计研究院有限公司 | Low-grade magnesite purifying process |
| CN104513033A (en) * | 2013-09-26 | 2015-04-15 | 沈阳铝镁设计研究院有限公司 | Technology of producing high purity magnesium oxide from low-grade magnesite |
| CN104437883B (en) * | 2014-11-13 | 2017-04-05 | 中蓝连海设计研究院 | Process the digestion desliming reverse flotation method of low grade high-silicon high calcium magnesite |
| CN104437883A (en) * | 2014-11-13 | 2015-03-25 | 中蓝连海设计研究院 | Digestion-desliming-reverse floatation method for treatment of low-grade magnesite high in silicon content and calcium content |
| CN106179731A (en) * | 2016-07-19 | 2016-12-07 | 中化化肥有限公司成都研发中心 | Sesquichloride and the method for magnesium in high-gradient magnetic separation single reverse flotation coupling abjection phosphorus ore |
| CN107365905A (en) * | 2017-07-11 | 2017-11-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Closed circuit shower furnace is calcined dry grinding dry separation craft to a kind of refractory iron ore online |
| CN107365905B (en) * | 2017-07-11 | 2019-03-12 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of refractory iron ore closed circuit shower furnace roasting dry grinding dry separation craft online |
| CN107694950A (en) * | 2017-11-09 | 2018-02-16 | 中国矿业大学 | A kind of dry separation technique based on friction electrical selection purification magnesite |
| CN108672092A (en) * | 2018-05-16 | 2018-10-19 | 东北大学 | The process for effectively purifying of the low grade shepardite of high-silicon high calcium high ferro |
| CN109127114A (en) * | 2018-09-21 | 2019-01-04 | 大连地拓环境科技有限公司 | A kind of low-grade magnesite method of comprehensive utilization |
| CN110142134A (en) * | 2019-05-16 | 2019-08-20 | 辽宁万隆科技研发有限公司长沙分公司 | A kind of method of iron ore country rock comprehensive utilization |
| CN112474026A (en) * | 2020-11-16 | 2021-03-12 | 福州大学 | Magnesite acid triggering-spiral chute preselecting method |
| CN112551921A (en) * | 2020-11-25 | 2021-03-26 | 海城远东矿业有限公司 | Carbonization activation beneficiation technology for high-silicon magnesite |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |