CN104446534A - Method for preparing nickel-iron electric furnace bottom material by utilizing magnesite flotation tailing - Google Patents
Method for preparing nickel-iron electric furnace bottom material by utilizing magnesite flotation tailing Download PDFInfo
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- CN104446534A CN104446534A CN201410616716.4A CN201410616716A CN104446534A CN 104446534 A CN104446534 A CN 104446534A CN 201410616716 A CN201410616716 A CN 201410616716A CN 104446534 A CN104446534 A CN 104446534A
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Abstract
The invention relates to the field of fireproof materials for a nickel-iron metallurgy technology, and particularly relates to a method for preparing a nickel-iron electric furnace bottom material by utilizing a magnesite flotation tailing. According to the method, the comprehensive utilization of solid wastes of the magnesite flotation tailing can be directly applied to a nickel-iron smelting industry. The method comprises the following steps of: by taking a floated magnesite tailing as a raw material, drying and calcining to obtain light calcined powder, and delivering a mixture of the magnesite flotation tailing and the light calcined powder into a brick press to be pressed into a green brick; mixing light calcined magnesia obtained by drying, calcining and grinding the green brick with water, pressing into a ball, and then drying and sintering to obtain magnesium-forsterite rich synthetic sand; delivering cooled magnesium-forsterite rich synthetic sand into a crushing production line to respectively prepare granules of which the sizes are more than 0-1 mm, more than 1-3 mm and more than 3-6 mm and fine powder of 180-200 meshes, and mixing to obtain a finished product. The method disclosed by the invention can be used for solving the problem of pollution of flotation tailings on the environment and saving the production cost for an electric furnace bottom material production enterprise, and has good popularization and practical application values.
Description
Technical field
The present invention relates to ferronickel metallurgical technology fire resisting material field, be specially a kind of method utilizing magnesite flotation tailings to prepare ferronickel electric furnace furnace burdening, by the comprehensive utilization of magnesite flotation tailings solid waste, nickel-iron smelting industry can be applied directly to.
Background technology
Nickel-iron smelting extensively adopts mineral hot furnace at present, and bottom lining adopts MgO-CaO-Fe
2o
3matter dry method ramming mass, this kind of material has the following disadvantages in the application: first, and this material belongs to strong basicity refractory materials, and ferronickel dross belongs to acid, and slag has strong erosion effect to refractory materials, causes refractory life very short, affects the prolongation in furnace life; Secondly, because of containing free ca in this kind of material, cause its hydration resistance very poor, be both not easy to long-time storage, be also unfavorable for that the stage of electric furnace stops production.Therefore, develop a kind of long furnace life, water resistant refractory materials just very urgent.
In addition, China belongs to magnesite resource big country, and magnesite reserves account for 25% of the world, and of high grade, bury shallow, easily exploit.But Initial stages for reform and opening-up is not owing to having planning of science activities, cause disorderly adopting rob a mine, adopting richness, to abandon poor phenomenon very serious, high-grade ore is day by day exhausted up till now.In order to ensure the production of high-end refractory materials, and making full use of low grade ore, ore dressing being carried out to low grade ore and just becomes inevitable choice.Be limited to domestic current technique of preparing, select rate to reach 70%, the mine tailing of 30% therefore in ore dressing process, can be produced.This mine tailing has the feature of high fineness, high viscosity, high-moisture, there is no the approach effectively utilized at present, can only stack arbitrarily, fly upward with the wind, be degrading local environment, cause the wasting of resources.
Known through retrieving:
1, China Patent Publication No. CN201110159148.6 relate to the method with magnesite tailings and talcum mine tailing synthesis high purity forsterite with mine, but does not produce EAF bottom ramming mass product;
2, China Patent Publication No. CN201210149376.X relate to magnesium-forsterite synthetic sand and preparation method thereof, but does not produce EAF bottom ramming mass product;
3, China Patent Publication No. CN201210295498.X relate to a kind of technique utilizing mine tailing purification highly-purity magnesite, but does not produce EAF bottom ramming mass product;
4, China Patent Publication No. CN201210386317.4 relate to Electric furnace bottom forsterite dry-type material and preparation method thereof, but the utilization of resources not relating to magnesite tailings chosen by raw material.
Up to the present, not yet have with magnesite flotation tailings for the report of ferronickel electric furnace furnace burdening prepared by raw material, this project belongs to the technology of first research invention both at home and abroad.
Summary of the invention
The object of the present invention is to provide a kind of method utilizing magnesite flotation tailings to prepare ferronickel electric furnace furnace burdening, the method is not only conducive to utilization of waste material, solve flotation tailings to the pollution of environment, and electrogenesis stove furnace burdening enterprise of making a living has saved production cost, has good popularization and actual application value.
Technical scheme of the present invention is:
Utilize magnesite flotation tailings to prepare a method for ferronickel electric furnace furnace burdening, adopt magnesite flotation tailings to be raw material, its preparation process is:
(1) magnesite flotation tailings is dried 20 ~ 30 hours in 100 ~ 120 DEG C;
(2) the part magnesite flotation tailings after oven dry is calcined 2 ~ 6 hours at 800 ~ 1200 DEG C, become light burnt powder;
(3) by the magnesite flotation tailings after drying and light burnt powder mixing 4 ~ 6 minutes of 3 ~ 5:1 by weight proportion, add account for magnesite flotation tailings and light burnt powder gross weight 3 ~ 5% bittern as bonding agent, more mixing 10 ~ 20 minutes, obtain compound;
(4) compound is sent into brick pressing machine and be pressed into adobe, adobe is dried 6 ~ 24 hours through 100 ~ 120 DEG C, then calcines 2 ~ 6 hours at 800 ~ 1200 DEG C, obtains magnesia unslacked;
(5) by levigate to 150 ~ 400 orders for the magnesia unslacked after calcining;
(6) magnesia unslacked after levigate is mixed with the water accounting for described magnesia unslacked weight 10% ~ 20%, and by compound pressure ball; Ball material at 1450 DEG C ~ 1800 DEG C sintering, is incubated and within 1 ~ 5 hour, becomes rich magnesium-forsterite synthetic sand after drying 2 ~ 4 hours through 100 ~ 120 DEG C, for subsequent use after cooling;
(7) cooled rich magnesium-forsterite synthetic sand is sent into broken pulverizing production line, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 ~ 200 object fine powders respectively;
(8) after prepared four kinds of varigrained particulate material and fine powder being measured respectively, by weight percentage, the particulate material that granularity is greater than 0 ~ 1mm accounts for 20 ~ 25%, the particulate material of granularity 1 ~ 3mm accounts for 25 ~ 30%, the particulate material of granularity 3 ~ 6mm account for 20 ~ 25% and granularity 180 ~ 200 object fine powder account for 25 ~ 30% mixing, then to drop in sand mill mixing 2 ~ 10 minutes;
(9) mixing complete after loading packing bag be finished product.
The described magnesite flotation tailings that utilizes prepares the method for ferronickel electric furnace furnace burdening, in step (8), add one or more of 200 order magnesia powders, the pure magnesia powder of 200 height of eye and 200 order brown iron oxides as required, described 200 order magnesia powders, the pure magnesia powder of 200 height of eye or 200 order brown iron oxides account for 5 ~ 15% of described particulate material and fine powder gross weight.
Design philosophy of the present invention is:
(1) magnesite tailings after the present invention adopts flotation is raw material, light burnt powder is become after drying calcining, the compound of magnesite flotation tailings and light burnt powder is sent into brick pressing machine and is pressed into adobe, the object being pressed into adobe is for next step piles up on kiln car.
(2) adobe drying of the present invention calcining levigate after magnesia unslacked, rich magnesium-forsterite synthetic sand is sintered into through drying with after water mixing pressure ball, rich magnesium-forsterite crystalline phase is the principal crystalline phase in refractory materials of the present invention, gives refractory materials high-temperature behavior and resistance to slag is invaded, hydration resistance.
(3) particularly, broken pulverizing production line sent into by cooled rich magnesium-forsterite synthetic sand by the present invention, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 ~ 200 object fine powders respectively, adopt 4 grades of granularity batchings that finished product material can be made to have packing density of particle the most closely, only have high tap density that material just can be made to have impermeabilisation, scour resistance.
(4) 200 order magnesia powders, the pure magnesia powder of 200 height of eye or 200 order brown iron oxides in addition, are added as required.EAF bottom ramming mass in use, environment is very severe, multiple performance is needed to reach balanced, such as: high temperature resistant, anti-erosion, impermeabilisation, antistripping, suitable sintering temperature and suitable sintered layer thickness etc., meet means that these performances take contradiction often, improving refractoriness will cause sintering character bad, improves sintering character and can cause refractoriness reduction, scour resistance variation, therefore can only reach balanced.The object of supplementing 200 order magnesia powders and the pure magnesia powder of 200 heights of eye is the refractoriness of raising material and is beneficial to sintering, if add highly-purity magnesite particle, can only improve refractoriness, can not improve sintering character.The object of adding 200 order ferric oxide is that material is sintered at a suitable temperature, and the change of addition can adjust sintering temperature and sintered layer thickness.
Advantage of the present invention and beneficial effect are:
1, the present invention is that magnesite flotation tailings have found Processes For Effective Conversion, also for ferronickel electric furnace furnace bottom have found a kind of long lifetime refractory materials, reduces production cost simultaneously, protects environment.
2, the present invention is with this mine tailing for raw material, develops ferronickel electric furnace furnace burdening, will turn waste into wealth, not only have good economic benefits, and has good social benefit.
Embodiment
In a specific embodiment, it is raw material that the present invention utilizes magnesite flotation tailings to prepare ferronickel electric furnace furnace burdening employing magnesite flotation tailings, and its preparation process is:
(1) magnesite flotation tailings is dried 20 ~ 30 hours in 100 ~ 120 DEG C.(2) the part magnesite flotation tailings after oven dry is calcined 2 ~ 6 hours at 800 ~ 1200 DEG C, become light burnt powder.(3) by the magnesite flotation tailings after drying and light burnt powder mixing 4 ~ 6 minutes of 3 ~ 5:1 by weight proportion, add account for magnesite flotation tailings and light burnt powder gross weight 3 ~ 5% bittern as bonding agent, more mixing 10 ~ 20 minutes, obtain compound.(4) compound is sent into brick pressing machine and be pressed into adobe, adobe is dried 6 ~ 24 hours through 100 ~ 120 DEG C, then calcines 2 ~ 6 hours at 800 ~ 1200 DEG C, obtains magnesia unslacked.(5) by levigate to 150 ~ 400 orders for the magnesia unslacked after calcining.(6) magnesia unslacked after levigate is mixed with the water accounting for described magnesia unslacked weight 10% ~ 20%, and by compound pressure ball.Ball material at 1450 DEG C ~ 1800 DEG C sintering, is incubated and within 1 ~ 5 hour, becomes rich magnesium-forsterite synthetic sand after drying 2 ~ 4 hours through 100 ~ 120 DEG C, for subsequent use after cooling.(7) cooled rich magnesium-forsterite synthetic sand is sent into broken pulverizing production line, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 ~ 200 object fine powders respectively.(8) after prepared four kinds of varigrained particulate material and fine powder being measured respectively, by weight percentage, the particulate material that granularity is greater than 0 ~ 1mm accounts for 20 ~ 25%, the particulate material of granularity 1 ~ 3mm accounts for 25 ~ 30%, the particulate material of granularity 3 ~ 6mm account for 20 ~ 25% and granularity 180 ~ 200 object fine powder account for 25 ~ 30% mixing, then 200 order magnesia powders are added as required, one or more of the pure magnesia powder of 200 height of eye and 200 order brown iron oxides, described 200 order magnesia powders, the pure magnesia powder of 200 height of eye or 200 order brown iron oxides account for 5 ~ 15% of described particulate material and fine powder gross weight, to drop into again in sand mill mixing 2 ~ 10 minutes.(9) mixing complete after loading packing bag be finished product.
Below by embodiment, the present invention is described in more detail.
Embodiment 1
In the present embodiment, raw material sources, in the flotation tailings of Liaoning Area magnesite, utilize magnesite flotation tailings to prepare the method for ferronickel electric furnace furnace burdening as follows:
(1) magnesite flotation tailings is dried 24 hours in 110 DEG C.(2) the part magnesite flotation tailings after oven dry is calcined 6 hours at 870 DEG C, become light burnt powder.(3) by the magnesite flotation tailings after drying and light burnt powder mixing 5 minutes of 4:1 by weight proportion, add account for magnesite flotation tailings and light burnt powder gross weight 4% bittern as bonding agent, more mixing 15 minutes, obtain compound.(4) compound is sent into brick pressing machine and be pressed into adobe.Adobe is dried 12 hours through 110 DEG C, then calcines 4 hours at 900 DEG C, obtains magnesia unslacked.(5) by levigate to 180 orders for the magnesia unslacked after calcining.(6) magnesia unslacked after levigate is mixed with the water accounting for described magnesia unslacked weight 20%, and by compound pressure ball.Ball material sinters, is incubated and within 4 hours, becomes rich magnesium-forsterite synthetic sand after drying 4 hours through 110 DEG C at 1600 DEG C, for subsequent use after cooling.(7) cooled synthetic sand is sent into broken pulverizing production line, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 object fine powders respectively.(8) above 4 kinds of varigrained material are measured respectively by following part by weight: (being greater than 0 ~ 1mm) 22%, (being greater than 1 ~ 3mm) 27%, (being greater than 3 ~ 6mm) 23%, (180 order fine powder) 28%, the rear additional 200 order magnesia powders of mixing account for described particulate material and fine powder gross weight 10%, additional 200 order brown iron oxides account for described particulate material and fine powder gross weight 4%, drop in sand mill and are finished product in mixing 6 minutes.Furnace burdening refractoriness > 1790 DEG C, heating permanent line velocity of variation+0.7%.
Embodiment 2
In the present embodiment, raw material sources, in the flotation tailings of Liaoning Area magnesite, utilize magnesite flotation tailings to prepare the method for ferronickel electric furnace furnace burdening as follows:
(1) magnesite flotation tailings is dried 24 hours in 110 DEG C.(2) the part magnesite flotation tailings after oven dry is calcined 4 hours at 950 DEG C, become light burnt powder.(3) by the magnesite flotation tailings after drying and light burnt powder mixing 5 minutes of 4:1 by weight proportion, add account for magnesite flotation tailings and light burnt powder gross weight 4% bittern as bonding agent, more mixing 15 minutes, obtain compound.(4) compound is sent into brick pressing machine and be pressed into adobe.Adobe is dried 12 hours through 110 DEG C, then calcines 3.5 hours at 950 DEG C, obtains magnesia unslacked.(5) by levigate to 180 orders for the magnesia unslacked after calcining.(6) magnesia unslacked after levigate is mixed with the water accounting for described magnesia unslacked weight 20%, and by compound pressure ball.Ball material sinters, is incubated and within 4 hours, becomes rich magnesium-forsterite synthetic sand after drying through 110 DEG C at 1600 DEG C, for subsequent use after cooling.(7) cooled synthetic sand is sent into broken pulverizing production line, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 object fine powders respectively.(8) above 4 kinds of varigrained material are measured respectively by following part by weight: (being greater than 0 ~ 1mm) 22%, (being greater than 1 ~ 3mm) 27%, (being greater than 3 ~ 6mm) 23%, (180 order fine powder) 28%, the rear pure magnesia powder of additional 200 height of eye of mixing accounts for described particulate material and fine powder gross weight 10%, additional 200 order brown iron oxides account for described particulate material and fine powder gross weight 4%, drops in sand mill and is finished product in mixing 6 minutes.Furnace burdening refractoriness > 1790 DEG C, heating permanent line velocity of variation+0.7%.
Embodiment 3
In the present embodiment, raw material sources, in the flotation tailings of Liaoning Area magnesite, utilize magnesite flotation tailings to prepare the method for ferronickel electric furnace furnace burdening as follows:
(1) magnesite flotation tailings is dried 24 hours in 110 DEG C.(2) the part magnesite flotation tailings after oven dry is calcined 2.5 hours at 1000 DEG C, become light burnt powder.(3) by the magnesite flotation tailings after drying and light burnt powder mixing 5 minutes of 4:1 by weight proportion, add account for magnesite flotation tailings and light burnt powder gross weight 3% bittern as bonding agent, more mixing 15 minutes, obtain compound.(4) compound is sent into brick pressing machine and be pressed into adobe.Adobe is dried 12 hours through 100 DEG C, then calcines 2.5 hours at 1000 DEG C, obtains magnesia unslacked.(5) by levigate to 200 orders for the magnesia unslacked after calcining.(6) magnesia unslacked after levigate is mixed with the water accounting for described magnesia unslacked weight 20%, and by compound pressure ball.Ball material sinters, is incubated and within 4 hours, becomes rich magnesium-forsterite synthetic sand after drying 12 hours through 100 DEG C at 1650 DEG C, for subsequent use after cooling.(7) cooled synthetic sand is sent into broken pulverizing production line, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 object fine powders respectively.(8) above 4 kinds of varigrained material are measured respectively by following part by weight: (being greater than 0 ~ 1mm) 24%, (being greater than 1 ~ 3mm) 26%, (being greater than 3 ~ 6mm) 20%, (200 order fine powder) 30%, after mixing, additional 200 order iron oxide fines account for described particulate material and fine powder gross weight 4%, drop in sand mill and are finished product in mixing 5 minutes.Furnace burdening refractoriness 1760 DEG C, heating permanent line velocity of variation+0.6%.
Embodiment 4
In the present embodiment, raw material sources, in the flotation tailings of Liaoning Area magnesite, utilize magnesite flotation tailings to prepare the method for ferronickel electric furnace furnace burdening as follows:
(1) magnesite flotation tailings is dried 24 hours in 110 DEG C.(2) the part magnesite flotation tailings after oven dry is calcined 6 hours at 870 DEG C, become light burnt powder.(3) by the magnesite flotation tailings after drying and light burnt powder mixing 5 minutes of 4:1 by weight proportion, add account for magnesite flotation tailings and light burnt powder gross weight 5% bittern as bonding agent, more mixing 20 minutes, obtain compound.(4) compound is sent into brick pressing machine and be pressed into adobe.Adobe is dried 8 hours through 120 DEG C, then calcines 4 hours at 900 DEG C, obtains magnesia unslacked.(5) by levigate to 300 orders for the magnesia unslacked after calcining.(6) magnesia unslacked after levigate is mixed with the water accounting for described magnesia unslacked weight 20%, and by compound pressure ball.Ball material sinters, is incubated and within 4 hours, becomes rich magnesium-forsterite synthetic sand after drying 8 hours through 120 DEG C at 1600 DEG C, for subsequent use after cooling.(7) cooled synthetic sand is sent into broken pulverizing production line, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 object fine powders respectively.(8) above 4 kinds of varigrained material are measured respectively by following part by weight: (being greater than 0 ~ 1mm) 20%, (being greater than 1 ~ 3mm) 25%, (being greater than 3 ~ 6mm) 25%, (200 order fine powder) 30%, after mixing, additional 200 order iron oxide fines account for described particulate material and fine powder gross weight 6%, drop in sand mill and are finished product in mixing 5 minutes.Furnace burdening refractoriness 1750 DEG C, heating permanent line velocity of variation+1.3%.
Claims (2)
1. utilize magnesite flotation tailings to prepare a method for ferronickel electric furnace furnace burdening, it is characterized in that, adopt magnesite flotation tailings to be raw material, its preparation process is:
(1) magnesite flotation tailings is dried 20 ~ 30 hours in 100 ~ 120 DEG C;
(2) the part magnesite flotation tailings after oven dry is calcined 2 ~ 6 hours at 800 ~ 1200 DEG C, become light burnt powder;
(3) by the magnesite flotation tailings after drying and light burnt powder mixing 4 ~ 6 minutes of 3 ~ 5:1 by weight proportion, add account for magnesite flotation tailings and light burnt powder gross weight 3 ~ 5% bittern as bonding agent, more mixing 10 ~ 20 minutes, obtain compound;
(4) compound is sent into brick pressing machine and be pressed into adobe, adobe is dried 6 ~ 24 hours through 100 ~ 120 DEG C, then calcines 2 ~ 6 hours at 800 ~ 1200 DEG C, obtains magnesia unslacked;
(5) by levigate to 150 ~ 400 orders for the magnesia unslacked after calcining;
(6) magnesia unslacked after levigate is mixed with the water accounting for described magnesia unslacked weight 10% ~ 20%, and by compound pressure ball; Ball material at 1450 DEG C ~ 1800 DEG C sintering, is incubated and within 1 ~ 5 hour, becomes rich magnesium-forsterite synthetic sand after drying 2 ~ 4 hours through 100 ~ 120 DEG C, for subsequent use after cooling;
(7) cooled rich magnesium-forsterite synthetic sand is sent into broken pulverizing production line, preparation is greater than 0 ~ 1mm, is greater than 1 ~ 3mm, is greater than the particulate material of 3 ~ 6mm and 180 ~ 200 object fine powders respectively;
(8) after prepared four kinds of varigrained particulate material and fine powder being measured respectively, by weight percentage, the particulate material that granularity is greater than 0 ~ 1mm accounts for 20 ~ 25%, the particulate material of granularity 1 ~ 3mm accounts for 25 ~ 30%, the particulate material of granularity 3 ~ 6mm account for 20 ~ 25% and granularity 180 ~ 200 object fine powder account for 25 ~ 30% mixing, then to drop in sand mill mixing 2 ~ 10 minutes;
(9) mixing complete after loading packing bag be finished product.
2. according to the method utilizing magnesite flotation tailings to prepare ferronickel electric furnace furnace burdening according to claim 1, it is characterized in that, in step (8), add one or more of 200 order magnesia powders, the pure magnesia powder of 200 height of eye and 200 order brown iron oxides as required, described 200 order magnesia powders, the pure magnesia powder of 200 height of eye or 200 order brown iron oxides account for 5 ~ 15% of described particulate material and fine powder gross weight.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410516A (en) * | 2020-04-16 | 2020-07-14 | 北京利尔高温材料股份有限公司 | Composite electric furnace bottom ramming material for synthesizing spinel-magnesia-calcia-iron sand and preparation method thereof |
| CN115231580A (en) * | 2022-07-19 | 2022-10-25 | 沈阳化工大学 | Method for preparing forsterite and magnesite by sintering fine granular magnesite flotation tailings |
| CN115448700A (en) * | 2022-11-14 | 2022-12-09 | 淄博市产品质量检验研究院 | Magnesium ramming mass for refining furnace bottom and preparation process thereof |
| CN116082023A (en) * | 2023-01-04 | 2023-05-09 | 东北大学 | Method for preparing porous magnesia-based high-temperature ceramic by cooperatively utilizing magnesite tailings and magnesia waste |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565321A (en) * | 2009-06-16 | 2009-10-28 | 海城华宇耐火材料有限公司 | Method of producing forsterite refractory |
| CN101565280A (en) * | 2009-06-16 | 2009-10-28 | 海城华宇耐火材料有限公司 | Manufacturing method for burning light burning magnesite powder by tunnel kiln |
-
2014
- 2014-11-03 CN CN201410616716.4A patent/CN104446534B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565321A (en) * | 2009-06-16 | 2009-10-28 | 海城华宇耐火材料有限公司 | Method of producing forsterite refractory |
| CN101565280A (en) * | 2009-06-16 | 2009-10-28 | 海城华宇耐火材料有限公司 | Manufacturing method for burning light burning magnesite powder by tunnel kiln |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410516A (en) * | 2020-04-16 | 2020-07-14 | 北京利尔高温材料股份有限公司 | Composite electric furnace bottom ramming material for synthesizing spinel-magnesia-calcia-iron sand and preparation method thereof |
| CN111410516B (en) * | 2020-04-16 | 2022-04-15 | 北京利尔高温材料股份有限公司 | Composite electric furnace bottom ramming material for synthesizing spinel-magnesia-calcia-iron sand and preparation method thereof |
| CN115231580A (en) * | 2022-07-19 | 2022-10-25 | 沈阳化工大学 | Method for preparing forsterite and magnesite by sintering fine granular magnesite flotation tailings |
| CN115448700A (en) * | 2022-11-14 | 2022-12-09 | 淄博市产品质量检验研究院 | Magnesium ramming mass for refining furnace bottom and preparation process thereof |
| CN116082023A (en) * | 2023-01-04 | 2023-05-09 | 东北大学 | Method for preparing porous magnesia-based high-temperature ceramic by cooperatively utilizing magnesite tailings and magnesia waste |
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| CN104446534B (en) | 2017-01-11 |
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