CN104289318A - Desilication agent and method used for magnesite reverse flotation - Google Patents
Desilication agent and method used for magnesite reverse flotation Download PDFInfo
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- CN104289318A CN104289318A CN201410416053.1A CN201410416053A CN104289318A CN 104289318 A CN104289318 A CN 104289318A CN 201410416053 A CN201410416053 A CN 201410416053A CN 104289318 A CN104289318 A CN 104289318A
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- magnesite
- silicon
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Abstract
The invention provides a desilication agent and method used for magnesite reverse flotation. According to the agent regime of the desilication agent used for magnesite reverse flotation, in the rough silicon flotation work, 100 g to 300 g of dodecylamine and 1000 g to 2000 g of NaCO3 are added to each ton of magnesite; in the silicon scavenging work, 50 g to 200 g of dodecylamine and 300 g to 1000 g of NaCO3 are added to each ton of magnesite; in the rough magnesium flotation work, 1000 g to 3000 g of water glass and 500 g to 1000 g of oxyparaffin soap are added to each ton of magnesite; in the magnesium scavenging work, 100 g to 300 g of oxyparaffin soap is added to each ton of magnesite. The invention further discloses the desilication method used for magnesite reverse flotation, wherein the desilication agent is adopted in the method. The agent is scientific and reasonable in formula, the reverse flotation method is simple and easy to conduct, and the content of silicon in magnesite can be effectively decreased by conducting reverse flotation on low-grade magnesite through the reverse flotation desilication agent.
Description
Technical field
The present invention relates to magnesite smelting technique, particularly relate to a kind of for magnesite Counterfloatating desiliconization medicament and method.
Background technology
China is that magnesite resource is compared with one of the country of horn of plenty in the world, and distribution is more concentrated, and wherein Liaoning Province's magnesite rich reserves, accounts for 85% of national total amount, rank first in the country.The magnesite industry of China has now developed into the resource strong industry shown unique characteristics, and produce various magnesia and 1,500 ten thousand tons, goods per year, output occupies first place in the world.
China's magnesite ore quality majority is excellent, but all in various degree containing impurity SiO
2and CaO, make to form CaSiO in calcination process
3, during cooling easily pine from and refractory material is collapsed, can not directly as high-grade raw material.Along with annual continuous exploitation high-grade magnesite reserves are fewer and feweri, face the situation of magnesite resource shortage.The low-grade magnesite of a large amount of high silicon content can not be utilized effectively on the other hand, can only sell at a bargain or discharge.So the effective way effectively solving magnesite predicament is, improved the purity of magnesite by ore dressing.
Summary of the invention
The object of the invention is to, for the problem that the low-grade magnesite of above-mentioned high silicon content can not effectively utilize, propose a kind of for magnesite Counterfloatating desiliconization medicament, adopt this Counterfloatating desiliconization medicament to carry out reverse flotation to low-grade magnesite, can effectively reduce silicone content in magnesite.
For achieving the above object, the technical solution used in the present invention is: a kind of for magnesite Counterfloatating desiliconization medicament, regime of agent is: silicon roughly selects operation, lauryl amine 100-300g/t, NaCO
31000-2000g/t; Silicon scans operation, lauryl amine 50-200g/t, NaCO
3300-1000g/t; Magnesium roughly selects operation, waterglass 1000-3000g/t, oxidized paraffin wax soap 500-1000g/t; Magnesium scans operation, oxidized paraffin wax soap 100-300g/t.The present invention is except specified otherwise, and g/t all refers to the grams fed intake of magnesite per ton.
Further, regime of agent is: silicon roughly selects operation, and employing component and magnesite addition per ton are: lauryl amine 200g/t, NaCO
31000g/t; Silicon scans operation, and employing component and magnesite addition per ton are: lauryl amine 100g/t, NaCO
3500g/t; Magnesium roughly selects operation, and employing component and magnesite addition per ton are: waterglass 2000g/t, oxidized paraffin wax soap 800g/t; Magnesium scans operation, and employing component and magnesite addition per ton are: oxidized paraffin wax soap 200g/t.
Another object of the present invention to additionally provide with one for magnesite Counterfloatating desiliconization process, adopts above-mentioned magnesite Counterfloatating desiliconization medicament, particularly, comprises the following steps for magnesite Counterfloatating desiliconization process:
(1), ore grinding: raw ore is ground to granularity and is less than 200 orders;
(2), silicon roughly selects, and adds water and lauryl amine and NaCO to the raw ore in step (1)
3, pH value is adjusted to 8-10, and ore dressing temperature is 20-40 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(3), silicon scans, and adds water, lauryl amine and NaCO
3, pH value is adjusted to 8-10, and ore dressing temperature is 20-40 DEG C; Send into flotation device to scan, then filter;
(4), magnesium roughly selects, and add water, waterglass and oxidized paraffin wax soap, ore dressing temperature is 20-30 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(5), magnesium scans, and add water, oxidized paraffin wax soap, ore dressing temperature is 20-30 DEG C; Send into flotation device to scan, then filter;
(6), flotation again, then perform step (2)-(5), obtain special concentrate, its desiliconization rate is more than 95%.
Further, the grinding of described raw ore comprises the following steps: first first slightly broken with 150mm*200mm jaw crusher by raw ore, then breaks entering during 60mm*100mm jaw crusher carries out, is crushed to below 200 orders finally by ball mill.Experiment proves that grinding particle size is less, SiO in the concentrate MgO rate of recovery and concentrate
2content all reduces, and finally determines that the particle mean size of best ore grinding is 200 orders.
Further, silicon is roughly selected, and pH value is adjusted to 9, and ore dressing temperature is 30 DEG C.
Further, silicon is scanned, and pH value is adjusted to 9, and ore dressing temperature is 30 DEG C.
Further, magnesium is roughly selected, and ore dressing temperature is 25 DEG C.
Further, magnesium is scanned, and ore dressing temperature is 25 DEG C.
The present invention's one is used for magnesite Counterfloatating desiliconization medicament and method, and reagent combination science, rationally, its reverse flotation method is simple, easy, has the following advantages compared with prior art:
1, silicon is roughly selected and is not used 2# oil (terpenic oil), and prior art adopts terpenic oil to cause froth pulp be difficult to lawsuit and remove;
2, the water that the present invention filters down can be passed through recycling, recycles, and realizes the recycling of resource;
3, reverse flotation method of the present invention makes chats realize secondary flotation, further increases desiliconization rate, can reach more than 95 (prior art is 91%), and then improves the rate of recovery of magnesium.
Adopt the present invention to be used for magnesite Counterfloatating desiliconization medicament and method, effectively can utilize low-grade magnesite, extend the length of service in mine.
Detailed description of the invention
Embodiment 1
The basic chemical composition of raw ore is: 45.70%MgO, 2.24%SiO
2, 1.18%CaO, 0.47%Fe
2o
3, 0.21%P
2o
5and 0.18%Al
2o
3.
Present embodiment discloses a kind of for magnesite Counterfloatating desiliconization medicament, regime of agent is: silicon roughly selects operation, lauryl amine 200g/t, NaCO
31000g/t; Silicon scans operation, lauryl amine 100g/t, NaCO
35000g/t; Magnesium roughly selects operation, waterglass 2000g/t, oxidized paraffin wax soap 500g/t; Magnesium scans operation, oxidized paraffin wax soap 200g/t.The present invention is except specified otherwise, and g/t all refers to the grams fed intake of magnesite per ton.
Adopt above-mentioned desiliconization medicament as follows to magnesite Counterfloatating desiliconization process:
(1), ore grinding: first raw ore is first slightly broken with 150mm*200mm jaw crusher, then enter 60mm*100mm jaw crusher carry out in broken, be crushed to below 200 orders finally by ball mill;
(2), silicon roughly selects, and adds water and lauryl amine and NaCO to the raw ore in step (1)
3, pH value is adjusted to 9, and ore dressing temperature is 25 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(3), silicon scans, and adds water, lauryl amine and NaCO
3, pH value is adjusted to 9, and ore dressing temperature is 20-40 DEG C; Send into flotation device to scan, then filter;
(4), magnesium roughly selects, and add water, waterglass and oxidized paraffin wax soap, ore dressing temperature is 25 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(5), magnesium scans, and add water, oxidized paraffin wax soap, ore dressing temperature is 25 DEG C; Send into flotation device to scan, then filter;
(6), flotation again, then perform step (2)-(5), obtain special concentrate, its desiliconization rate is more than 97%.
Embodiment 2
Present embodiment discloses a kind of for magnesite Counterfloatating desiliconization medicament, regime of agent is: silicon roughly selects operation, lauryl amine 100g/t, NaCO
31000g/t; Silicon scans operation, lauryl amine 50g/t, NaCO
3300g/t; Magnesium roughly selects operation, waterglass 1000g/t, oxidized paraffin wax soap 500g/t; Magnesium scans operation, oxidized paraffin wax soap 100g/t.The present invention is except specified otherwise, and g/t all refers to the grams fed intake of magnesite per ton.
A kind of for magnesite Counterfloatating desiliconization process, adopt above-mentioned magnesite Counterfloatating desiliconization medicament, particularly, comprise the following steps for magnesite Counterfloatating desiliconization process:
(1), ore grinding: raw ore is ground to granularity and is less than 200 orders;
(2), silicon roughly selects, and adds water and lauryl amine and NaCO to the raw ore in step (1)
3, pH value is adjusted to 8, and ore dressing temperature is 20 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(3), silicon scans, and adds water, lauryl amine and NaCO
3, pH value is adjusted to 8, and ore dressing temperature is 20 DEG C; Send into flotation device to scan, then filter;
(4), magnesium roughly selects, and add water, waterglass and oxidized paraffin wax soap, ore dressing temperature is 20 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(5), magnesium scans, and add water, oxidized paraffin wax soap, ore dressing temperature is 20 DEG C; Send into flotation device to scan, then filter;
(6), flotation again, then perform step (2)-(5), obtain special concentrate, its desiliconization rate is more than 98%.
Embodiment 3
Present embodiment discloses a kind of for magnesite Counterfloatating desiliconization medicament, regime of agent is: silicon roughly selects operation, lauryl amine 300g/t, NaCO
32000g/t; Silicon scans operation, lauryl amine 200g/t, NaCO
31000g/t; Magnesium roughly selects operation, waterglass 3000g/t, oxidized paraffin wax soap 1000g/t; Magnesium scans operation, oxidized paraffin wax soap 300g/t.The present invention is except specified otherwise, and g/t all refers to the grams fed intake of magnesite per ton.
A kind of for magnesite Counterfloatating desiliconization process, adopt above-mentioned magnesite Counterfloatating desiliconization medicament, particularly, comprise the following steps for magnesite Counterfloatating desiliconization process:
(1), ore grinding: raw ore is ground to granularity and is less than 200 orders;
(2), silicon roughly selects, and adds water and lauryl amine and NaCO to the raw ore in step (1)
3, PH value is adjusted to 10, and ore dressing temperature is 40 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(3), silicon scans, and adds water, lauryl amine and NaCO
3, pH value is adjusted to 10, and ore dressing temperature is 40 DEG C; Send into flotation device to scan, then filter;
(4), magnesium roughly selects, and add water, waterglass and oxidized paraffin wax soap, ore dressing temperature is 30 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(5), magnesium scans, and add water, oxidized paraffin wax soap, ore dressing temperature is 30 DEG C; Send into flotation device to scan, then filter;
(6), flotation again, then perform step (2)-(5), obtain special concentrate, its desiliconization rate is more than 95%.
The present invention is not limited to one described in above-described embodiment for magnesite Counterfloatating desiliconization medicament and method, and the change of its Chinese medicine addition, in desilication method, the change of grinding particle size and the change of ore dressing temperature are all within protection scope of the present invention.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. for a magnesite Counterfloatating desiliconization medicament, it is characterized in that, regime of agent is: silicon roughly selects operation, lauryl amine 100-300g/t, NaCO
31000-2000g/t; Silicon scans operation, lauryl amine 50-200g/t, NaCO
3300-1000g/t; Magnesium roughly selects operation, waterglass 1000-3000g/t, oxidized paraffin wax soap 500-1000g/t; Magnesium scans operation, oxidized paraffin wax soap 100-300g/t.
2. according to claim 1 for magnesite Counterfloatating desiliconization medicament, it is characterized in that, regime of agent is: silicon roughly selects operation, and employing component and magnesite addition per ton are: lauryl amine 200g/t, NaCO
31000g/t; Silicon scans operation, and employing component and magnesite addition per ton are: lauryl amine 100g/t, NaCO
3500g/t; Magnesium roughly selects operation, and employing component and magnesite addition per ton are: waterglass 2000g/t, oxidized paraffin wax soap 800g/t; Magnesium scans operation, and employing component and magnesite addition per ton are: oxidized paraffin wax soap 200g/t.
3. for a magnesite Counterfloatating desiliconization process, it is characterized in that, for magnesite Counterfloatating desiliconization medicament described in employing claim 1 or 2, comprise the following steps:
(1), ore grinding: raw ore is ground to granularity and is less than 200 orders;
(2), silicon roughly selects, and adds water and lauryl amine and NaCO to the raw ore in step (1)
3, pH value is adjusted to 8-10, and ore dressing temperature is 20-40 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(3), silicon scans, and adds water, lauryl amine and NaCO
3, pH value is adjusted to 8-10, and ore dressing temperature is 20-40 DEG C; Send into flotation device to scan, then filter;
(4), magnesium roughly selects, and add water, waterglass and oxidized paraffin wax soap, ore dressing temperature is 20-30 DEG C; Feeding flotation device carries out reverse flotation and roughly selects, and then filters;
(5), magnesium scans, and add water, oxidized paraffin wax soap, ore dressing temperature is 20-30 DEG C; Send into flotation device to scan, then filter;
(6), flotation again, then perform step (2)-(5), obtain special concentrate.
4. according to claim 3 for magnesite Counterfloatating desiliconization process, it is characterized in that, described raw ore grinding comprises the following steps: first first slightly broken with 150mm*200mm jaw crusher by raw ore, then enter 60mm*100mm jaw crusher carry out in broken, be crushed to below 200 orders finally by ball mill.
5. according to claim 3 for magnesite Counterfloatating desiliconization process, it is characterized in that, silicon is roughly selected, and pH value is adjusted to 9, and ore dressing temperature is 30 DEG C.
6. according to claim 3 for magnesite Counterfloatating desiliconization process, it is characterized in that, silicon is scanned, and pH value is adjusted to 9, and ore dressing temperature is 30 DEG C.
7. according to claim 3 for magnesite Counterfloatating desiliconization process, it is characterized in that, magnesium is roughly selected, and ore dressing temperature is 25 DEG C.
8. according to claim 3 for magnesite Counterfloatating desiliconization process, it is characterized in that, magnesium is scanned, and ore dressing temperature is 25 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416053.1A CN104289318A (en) | 2014-08-21 | 2014-08-21 | Desilication agent and method used for magnesite reverse flotation |
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|---|---|---|---|
| CN201410416053.1A CN104289318A (en) | 2014-08-21 | 2014-08-21 | Desilication agent and method used for magnesite reverse flotation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108514952A (en) * | 2018-04-26 | 2018-09-11 | 丛茂生 | Giobertite method for floating |
| CN111389596A (en) * | 2020-03-31 | 2020-07-10 | 中昊(大连)化工研究设计院有限公司 | Collecting agent for flotation desilication and aluminum removal of magnesite and preparation method thereof |
| CN112221715A (en) * | 2020-08-10 | 2021-01-15 | 辽宁东和新材料股份有限公司 | Method for screening magnesite with low silicon dioxide content |
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2014
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108514952A (en) * | 2018-04-26 | 2018-09-11 | 丛茂生 | Giobertite method for floating |
| CN111389596A (en) * | 2020-03-31 | 2020-07-10 | 中昊(大连)化工研究设计院有限公司 | Collecting agent for flotation desilication and aluminum removal of magnesite and preparation method thereof |
| CN112221715A (en) * | 2020-08-10 | 2021-01-15 | 辽宁东和新材料股份有限公司 | Method for screening magnesite with low silicon dioxide content |
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Application publication date: 20150121 |