CN102910658B - Corundum recovery agent and corundum recovery method - Google Patents

Corundum recovery agent and corundum recovery method Download PDF

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CN102910658B
CN102910658B CN201210436534.XA CN201210436534A CN102910658B CN 102910658 B CN102910658 B CN 102910658B CN 201210436534 A CN201210436534 A CN 201210436534A CN 102910658 B CN102910658 B CN 102910658B
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corundum
preparation
reclaims
mass percentage
refractory
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CN201210436534.XA
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CN102910658A (en
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周敏
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Shanghai Normal University
University of Shanghai for Science and Technology
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Shanghai Normal University
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Abstract

The invention discloses a corundum recovery agent and a corundum recovery method. The corundum recovery agent is water solution agent and comprises the following compositions: HCl with the mass percentage concentration of 4.5%-15%, H3PO4 with the mass percentage concentration of 0.5%-8.5%, hydrolytic polymaleic anhydride with the concentration of 100-1000 ppm, and NH4Cl with the density of 0.5-5kg/m<3>. The recovery method comprises the steps that waste corundum fireproof material particles after being crushed and subjected to magnetic-separation iron removal are soaked in the corundum recovery agent, and then the waste corundum fireproof material particles are cleaned. By adopting the recovery method, corundum in the waste material can be directly and completely separated, clean corundum is obtained, and the purpose of the corundum product is not limited.

Description

Corundum reclaims the recovery method of preparation and corundum
Technical field
The present invention relates to the recovery method that a kind of corundum reclaims preparation and corundum.
Background technology
Along with developing rapidly of the industry such as China's ferrous metallurgy, cement, pottery, the consumption of refractory materials increases greatly.2004 according to the whole nation 30 provinces, cities and autonomous regions 136 refractory materials enterprise statisticses, 1867.51 ten thousand tons of national refractory materials output, and crude steel output reaches 2.7 hundred million tons, and the consumption of refractory materials has reached 800～9,000,000 tons, and resistance to/steel is than 29～33kg/ ton steel.Iron and Steel Production producer consumes the refractory materials of maximum, its steel melting furnace furnace lining, refining furnace furnace lining, transmit stove furnace lining and heat treatment furnace lining and consume every year (the recycling of the refractory materials used of steelworks of the more than 60% of refractory materials output, Xu Qingbin, external refractory materials, 1999,10:3).Meanwhile, also caused a large amount of consumption of refractory material resources and refractory materials, the annual waste and old refractory materials producing therefrom (is brief talked the comprehensive utilization of refractory materials up to more than 300 ten thousand tons, Sun Jie gem etc., Shandong metallurgy, 2006,28 (1): 48).A large amount of go out of use with refractory, caused the serious wasting of resources and environmental pollution.
Existing research shows, these have recycle value by the major part in refractory.For example, after full furnace life of steel melting furnace, steel melting furnace has just been scrapped, and wherein contains the white fused alumina up to 55%-90% as the refractory materials of backup lining brick, is worth very high.If the white fused alumina reclaiming wherein can produce very high economic benefit, also can reduce environmental pollution simultaneously.Thus, seem more and more important with the recycle work of rear waste refractory materials, but existing research is still in the starting stage.
Existing report is following several to having with the recycling of refractory, is all to reprocess after directly waste material being pulverized.
1, the useless brick of steel-making refining furnace of magnesium carbon system and magnalium carbon system, after pulverizing, whole grain and geometric ratio are mixed, replace part light dolomite, use as the filler of making of 70t refining furnace refined alloy structure iron.(effective utilization of the useless brick of steel-making refining furnace, Cen Yongquan, Shanghai Metals, 1996,01).
2, with the good industrial ceramics of aluminosilicate refractory waste processability, prepare the alumina base porcelain ball of a series of aluminium sesquioxide content from 45% to 85% and (prepare technology and the mechanism research of alumina-based ceramic with aluminosilicate refractory waste, Zhong Lianyun, Wuhan University of Technology's Ph D dissertation, 2006).
3, take with rear waste aluminium magnesia carbon brick and waste magnesia carbon bricks as main raw material, add graphite, carry out secondary aluminum magnesia carbon brick and magnesia carbon brick; (with the regeneration of refractory, keep one's word in field. refractory materials, 2002, (6): 339).
4, take with rear magnesia carbon brick, aluminium ash, aluminium titanium slag and aluminium chromium slag as raw material, add titanium dioxide, the synthetic magnalium point of chromic oxide stone (with the research of refractory synthetic MgAl spinal, Yu Pengpeng, ferrous metallurgy, 2012).
Summary of the invention
Technical problem to be solved by this invention is that in prior art, the recovery method for refractory materials exists: be all directly to use refractory waste to process to prepare reconstituted product, and due to uncertain kind and the performance of having limited to reconstituted product of waste material composition, and the defect that the higher refractory materials of value wherein is not utilized effectively etc., can directly the corundum in waste material thoroughly be separated and provide a kind of, obtain clean corundum, the unrestricted corundum of end-use reclaims the recovery method of preparation and corundum.
The invention provides a kind of corundum recovery preparation is aqueous solution preparation, the HCl that contains mass percentage concentration 4.5%～15%, the H of mass percentage concentration 0.5%～8.5% 3pO 4, the hydrolytic polymaleic anhydride of 100～1000ppm, and 0.5～5kg/m 3nH 4cl.
In the present invention, it is 15% HCl, the H of mass percentage concentration 8.5% that described corundum recovery preparation preferably contains mass percentage concentration 3pO 4, 1000ppm hydrolytic polymaleic anhydride and 0.5kg/m 3nH 4cl.
Corundum recovery preparation of the present invention preferably solute is the HCl by mass percentage concentration 4.5%～15%, mass percentage concentration 0.5%～8.5%H 3pO 4, the hydrolytic polymaleic anhydride of 100～1000ppm, and 0.5～5kg/m 3nH 4cl composition.
In the present invention, described HCl, H 3pO 4and NH 4cl is conventional reagent, all commercially available obtaining of this area.
In the present invention, described hydrolytic polymaleic anhydride is that this area routine is said, it is a kind of lower molecular weight polyelectrolyte, general relative molecular weight is 400 ~ 800, and outward appearance is light yellow to red-brown transparent liquid, meets the index in standard GB/T/T 10535-1997, solid content is generally 50%, as the hydrolytic polymaleic anhydride of Qingdao TianLan Power Industry Co.,Ltd, its product specification is solid content >=48%, molecular-weight average >=450.
Corundum of the present invention reclaims in preparation also can contain conventional various other additives that add, as long as its not remarkably influenced corundum of the present invention reclaims preparation effect, as sodium polyphosphate Na 5p 3o 10, Secondary ammonium phosphate etc.
The preparation method that corundum of the present invention reclaims preparation evenly mixes by this area is conventional.
The present invention also provides a kind of recovery method of corundum to comprise the steps:, by the particle of the useless corundum refractory after pulverizing and iron removal by magnetic separation, to reclaim in preparation and soak in aforementioned corundum, cleans afterwards.
In the present invention, described useless corundum refractory is the refractory materials that the conventional said main component in this area is corundum, general from discarded blast furnace, steel melting furnace, hot metal ladle or ladle.
In the present invention, described pulverizing is this area routine operation, generally operates by pulverizer, and the grain diameter after preferably pulverizing is≤2cm.After pulverizing, clear water is washed Powdered tack coat off routinely.
In the present invention, described iron removal by magnetic separation is this area routine operation, generally operates by magnetic separator.
In the present invention, the particle of the described useless corundum refractory after pulverizing and iron removal by magnetic separation is generally removed powder clay according to conventional cleaning the in this area.
In the present invention, the consumption that described corundum reclaims preparation is preferably the useless corundum refractory of 1.8～2.5kg solution/kg.
In the present invention, described immersion is this area routine operation, and preferably soaking conditions is for soaking 2～48 hours.General soak at room temperature, described normal temperature is generally 0 ℃～40 ℃.
In the present invention, described cleaning is this area routine operation, and general stirring washed.
In the present invention, after described cleaning, be dried according to this area routine, obtain dry finished product.
Agents useful for same of the present invention and raw material be commercially available obtaining all.
Meeting on the basis of this area general knowledge, in the present invention, the optimum condition of above-mentioned each technical characterictic can arbitrary combination obtain preferred embodiments of the present invention.
Positive progressive effect of the present invention is: the inventive method can directly thoroughly be separated the corundum in useless corundum refractory, obtains clean corundum, and end-use is unrestricted, can be used for the producers such as electrolytic aluminum, refractory materials, abrasive material; And its cost recovery is only the part of brand-new white fused alumina, even approach the price of bauxitic clay raw ore, benefit is very considerable.
Accompanying drawing explanation
Fig. 1 is that embodiment 2 separates the outward appearance photo that obtains corundum.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.The experimental technique of unreceipted actual conditions in the following example, according to ordinary method and condition, or selects according to catalogue.
In following embodiment, hydrolytic polymaleic anhydride used is purchased from electric power Industrial Co., Ltd., and product specification is solid content >=48%, molecular-weight average >=450.Corundum reclaims all operation at normal temperatures.
The pre-treatment of embodiment 1 useless corundum refractory
The corundum refractory that will give up obtains grain diameter≤2cm after pulverizing, and iron removal by magnetic separation cleans and removes powder clay, the particle of the corundum refractory that must give up.
Embodiment 2
It is aqueous solution preparation that corundum reclaims preparation: containing mass percentage concentration is the H of 15%HCl, mass percentage concentration 8.5% 3pO 4, 1000ppm hydrolytic polymaleic anhydride and 0.5kg/m 3nH 4cl.The even mixing of each composition and get final product.
By the particle 100kg of the useless corundum refractory of embodiment 1, the above-mentioned corundum that is soaked in 200kg reclaims in preparation, soak 38 hours, obtain through stirring washing again: the tack coat of 2/3 useless corundum refractory is loose coming off completely, obtain corundum 68kg, corundum is very clean as shown in Figure 1, and the half in remaining 1/3 part only has minute quantity tack coat remnants, and the half of also having an appointment has part tack coat remnants.
Embodiment 3
It is aqueous solution preparation that corundum reclaims preparation: containing mass percentage concentration is the H of 15%HCl, mass percentage concentration 0.5% 3pO 4, 100ppm hydrolytic polymaleic anhydride and 5kg/m 3nH 4cl.The even mixing of each composition and get final product.
By the particle 100kg of the useless corundum refractory of embodiment 1, the above-mentioned corundum that is soaked in 200kg reclaims in preparation, soak 48 hours, stir and obtain through washing again: the tack coat of approximately 1/2 useless corundum refractory is loose coming off completely, and soak mostly being the yellow tack coat of mud and bleaching look tack coat of can not take off, effect is better.
Embodiment 4
It is aqueous solution preparation that corundum reclaims preparation: containing mass percentage concentration is the H of 5.5%HCl, mass percentage concentration 4.5% 3pO 4, 1000ppm hydrolytic polymaleic anhydride and 5kg/m 3nH 4cl.The even mixing of each composition and get final product.
By the particle 100kg of the useless corundum refractory of embodiment 1, the above-mentioned corundum that is soaked in 200kg reclaims in preparation, soaks 5.5 hours, then stirs and obtain through washing: the tack coat major part of nearly 2/3 useless corundum refractory comes off, only remaining a small amount of remaining, the tack coat in a few granules comes off less.
Embodiment 5
It is aqueous solution preparation that corundum reclaims preparation: containing mass percentage concentration is the H of 4.5%HCl, mass percentage concentration 4.5% 3pO 4, 1000ppm hydrolytic polymaleic anhydride and 5kg/m 3nH 4cl.The even mixing of each composition and get final product.
By the particle 100kg of the useless corundum refractory of embodiment 1, the above-mentioned corundum that is soaked in 250kg reclaims in preparation, soaks 2 hours, then stirs and obtain through washing: the tack coat major part of nearly 2/3 useless corundum refractory comes off, only remaining a small amount of remaining, the tack coat in a few granules comes off less.
Embodiment 6
It is aqueous solution preparation that corundum reclaims preparation: containing mass percentage concentration is the H of 15%HCl, mass percentage concentration 8.5% 3pO 4, mass percentage concentration 1% sodium polyphosphate Na 5p 3o 10, 1000ppm hydrolytic polymaleic anhydride and 0.5kg/m 3nH 4cl.The even mixing of each composition and get final product.
By the particle 100kg of the useless corundum refractory of embodiment 1, the above-mentioned corundum that is soaked in 180kg reclaims in preparation, soak 40 hours, obtain through stirring washing again: the tack coat of 2/3 useless corundum refractory is loose coming off completely, obtain corundum clean, half in remaining 1/3 part only has minute quantity tack coat remnants, and the half of also having an appointment has part tack coat remnants.
Comparative example 1-4
It is 5%, 10%, 15%, 20% sulphuric acid soln that comparative example 1-4 preparation is respectively mass percentage concentration.
By the particle 100kg of the useless corundum refractory of embodiment 1, be soaked in the preparation of comparative example 1-4 of 200kg respectively, soak 1 time-of-week, various types of tack coats all, without departing from, cannot obtain clean corundum.
Comparative example 5-6
It is 10%, 20% oxalic acid solution that comparative example 5-6 preparation is respectively mass percentage concentration.
By the particle 100kg of the useless corundum refractory of embodiment 1, be soaked in the preparation of comparative example 5-6 of 200kg respectively, soak 1 time-of-week, various types of tack coats all, without departing from, cannot obtain clean corundum.
Comparative example 7
Comparative example 7 preparations are that mass percentage concentration is 4.5% hydrochloric acid soln.
By the particle 100kg of the useless corundum refractory of embodiment 1, be soaked in the preparation of comparative example 7 of 200kg, soak with 21 hours, only approximately 1/4 tack coat is loose comes off, and effect is poor.

Claims (8)

1. corundum reclaims a preparation, it is characterized in that, it is aqueous solution preparation, the HCl that contains mass percentage concentration 4.5%～15%, the H of mass percentage concentration 0.5%～8.5% 3pO 4, the hydrolytic polymaleic anhydride of 100～1000ppm, and 0.5～5 kg/m 3nH 4cl.
2. corundum as claimed in claim 1 reclaims preparation, it is characterized in that, it is 15% HCl, the H of mass percentage concentration 8.5% that described corundum recovery preparation contains mass percentage concentration 3pO 4, 1000ppm hydrolytic polymaleic anhydride and 0.5 kg/m 3nH 4cl.
3. corundum as claimed in claim 1 reclaims preparation, it is characterized in that, described corundum reclaims the solute of preparation by HCl, H 3pO 4, hydrolytic polymaleic anhydride and NH 4cl composition.
4. the corundum as described in claim 1 ~ 3 any one reclaims preparation, it is characterized in that, described hydrolytic polymaleic anhydride is the hydrolytic polymaleic anhydride of Qingdao TianLan Power Industry Co.,Ltd, and the product specification of described hydrolytic polymaleic anhydride is solid content >=48%, molecular-weight average >=450.
5. a recovery method for corundum, is characterized in that, it comprises the steps:, by the particle of the useless corundum refractory after pulverizing and iron removal by magnetic separation, to reclaim in preparation and soak in the corundum as described in claim 1-4 any one, cleans afterwards.
6. the recovery method of corundum as claimed in claim 5, is characterized in that, the grain diameter after described pulverizing is≤2cm.
7. the recovery method of corundum as claimed in claim 5, is characterized in that, the consumption that described corundum reclaims preparation is the useless corundum refractory of 1.8～2.5kg solution/kg.
8. the recovery method of corundum as claimed in claim 5, is characterized in that, the condition of described immersion is for soaking 2～48 hours.
CN201210436534.XA 2012-11-05 2012-11-05 Corundum recovery agent and corundum recovery method Expired - Fee Related CN102910658B (en)

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CN112430105A (en) * 2020-10-30 2021-03-02 云南濮耐昆钢高温材料有限公司 Aluminum-magnesium-carbon brick prepared from regenerated tabular corundum and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6110434A (en) * 1998-02-25 2000-08-29 Alumitech Of Cleveland, Inc. Recovery of products from non-metallic products derived from aluminum dross
CN1600689A (en) * 2004-10-12 2005-03-30 金杰仁 Method for reclaiming corindon
CN1883827A (en) * 2006-06-02 2006-12-27 上海宝钢综合开发公司 Production process for extracting compact alumina by using waste castable in main trough of blast furnace

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6110434A (en) * 1998-02-25 2000-08-29 Alumitech Of Cleveland, Inc. Recovery of products from non-metallic products derived from aluminum dross
CN1600689A (en) * 2004-10-12 2005-03-30 金杰仁 Method for reclaiming corindon
CN1883827A (en) * 2006-06-02 2006-12-27 上海宝钢综合开发公司 Production process for extracting compact alumina by using waste castable in main trough of blast furnace

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
王春华 等.白刚玉收尘料回收利用的研究.《河南化工》.2000,(第7期),14-15.
白刚玉收尘料回收利用的研究;王春华 等;《河南化工》;20001231(第7期);14-15 *

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