CN100381584C - Method for producing slag forming agent contg. high calcium and low silicone by corundum arc furnace - Google Patents
Method for producing slag forming agent contg. high calcium and low silicone by corundum arc furnace Download PDFInfo
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- CN100381584C CN100381584C CNB2006100510067A CN200610051006A CN100381584C CN 100381584 C CN100381584 C CN 100381584C CN B2006100510067 A CNB2006100510067 A CN B2006100510067A CN 200610051006 A CN200610051006 A CN 200610051006A CN 100381584 C CN100381584 C CN 100381584C
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Abstract
The present invention discloses a method for producing slag forming constituents with high calcium and low silicone by a corundum arc furnace, which comprises the following procedures: (1) proportioning: raw materials are crushed into the materials of 2mm to 15mm, and mixing proportioning is carried out by the proportioning of 42% to 45% of cooked bauxite, 48% to 53% of quicklime, 3% to 4% of calcite and 1% to 2% of coke; (2) smelting: the raw materials are thrown into the furnace in batches, 10% to 30% of total material quantity is thrown before the furnace is opened, the remainder is evenly thrown for 3 to 4 times after 20 to 30 min of voltage stabilization, the material layer is totally melted when batch charging is finished in the furnace, the material surface glows and forms a soft cover, and the furnace can be shut down; (3) turning down, ladling and cooling; (4) grading: unqualified crystallisation to be used after crushed into 0mm to 15mm; (5) crushing, testing, packaging and warehousing qualified crystallization after polarization. The present invention has the advantages of thorough chemical reaction, good chemical stability, high product CaO content, strong activity, good desulfation and dephosphorization effect and good product performance.
Description
Technical field
The invention belongs to technical field of smelting, relate in particular to a kind of method of producing the high calcium and low silicone slag former.
Background technology
The high calcium and low silicone slag former that iron and steel metallurgical industry uses, traditional production method is the rotary kiln calcination, raw material make a living bauxitic clay and Wingdale, the subject matter of its existence is: because the rotation of kiln body, material is the high temperature motion in kiln, adds that raw material constantly drop into, the temperature difference big (reaching about 500 ℃) in the kiln, make the product poor chemical stability, the performance index instability; CaO, Al
2O
3Begin fusing at 1200 ℃, stop up easily in the kiln when furnace temperature surpasses 1400 ℃, usually produce and to stop the kiln cleaning week; Take off S, P effect relatively poor (S, P take off to a certain degree and just can't improve again, directly influence the high-quality Iron and Steel Production), product main chemical CaO content≤30%, poor activity, detrimental impurity component content height, thereby product performance are not good.
Summary of the invention
A kind of chemical reaction that the objective of the invention is to overcome above-mentioned shortcoming and provide is thorough, and chemical stability is good, products C aO content height, and active strong, it is effective to take off S, P, the method with corundum arc furnace production high calcium and low silicone slag former of good product performance.
A kind of method of producing the high calcium and low silicone slag former with corundum arc furnace of the present invention may further comprise the steps:
(1) batching: raw material crushing to 2-15mm, is pressed following proportioning mix wrought aluminium alumina 42～45%, unslaked lime 48%～53%, calcite 3～4%, coke 1～2% then;
(2) melting: the raw material gradation drops in the stove, drops into the 10-30% of total stuff amount before the blow-on, and 3-4 throwing of clout average mark drops into after current/voltage is stablized 20-30min, the whole fusions of the bed of material to the stove that finish that feed intake, and charge level is rubescent and form soft lid and get final product blowing out;
(3) fall stove, connect bag, cool off;
(4) classification: stand-by behind the underproof 0-15mm of being crushed to of crystallization (be mixed together batching with raw material, add-on is the 10-20% of raw material total amount, like this can save energy, reduce the input of material quantity, thereby reduce product cost);
(5) classified post crystallization is qualified, carries out fragmentation, check, packing, warehouse-in.
The present invention has compared with prior art overcome the interior big shortcoming of the temperature difference of stove that rotary kiln exists, and raw material adopts wrought aluminium alumina, unslaked lime, calcite and removes silicon additive, and Al in the product can be stablized and control to the wrought aluminium alumina
2O
3Composition strengthens product slag making performance; CaO composition in the product can be stablized and control to unslaked lime, strengthens the product activity and take off P, S ability; Calcite and coke participate in chemical reaction, reduce Fe in the product
2O
3, SiO
2Content is removed detrimental impurity composition in the product, improves product performance.And furnace temperature reaches 1800 ℃-1900 ℃, and chemical reaction is thorough, and chemical stability is good; Because chemical reaction is abundant, products C aO content height, active strong, take off S, P is effective, performance index are stable, can satisfy various steel and smelt demands.
Description of drawings
Accompanying drawing is a process flow sheet of the present invention.
Embodiment
Embodiment 1:
Referring to accompanying drawing, a kind of method of producing the high calcium and low silicone slag former with corundum arc furnace may further comprise the steps:
(1) batching: raw material crushing to 2-15mm, is pressed following proportioning mix, wrought aluminium alumina 4200kg, unslaked lime 5300kg, calcite 4kg, coke 1kg then;
(2) melting: the raw material gradation drops into the 3000KVA corundum to be toppled in the electric arc furnace, drops into 1000kg before the blow-on, and the clout average mark is thrown for 3 times, after stablizing 20-30min, drops into current/voltage, each 3000kg that throws, the whole fusions of the bed of material to the stove that finish that feed intake, charge level is rubescent and form soft lid and get final product blowing out;
(3) fall stove, connect bag, cool off;
(4) classification: stand-by behind the underproof 0-15mm of being crushed to of crystallization (reach to return with raw material after a certain amount of be mixed together batching, add-on is the 10-20% of raw material total amount);
(5) classified post crystallization is qualified, carries out fragmentation, check, packing, warehouse-in.
Embodiment 2:
Referring to accompanying drawing, a kind of method of producing the high calcium and low silicone slag former with corundum arc furnace may further comprise the steps:
(1) batching: raw material crushing to 2-15mm, is pressed following proportioning mix, wrought aluminium alumina 4300kg, unslaked lime 5200kg, calcite 3kg, coke 2kg then;
(2) melting: the raw material gradation drops into the 3000KVA corundum to be toppled in the electric arc furnace, drops into 2000kg before the blow-on, and the clout average mark is thrown for 4 times, after stablizing 20-30min, drops into current/voltage, each 2000kg that throws, the whole fusions of the bed of material to the stove that finish that feed intake, charge level is rubescent and form soft lid and get final product blowing out;
(3) fall stove, connect bag, cool off;
(4) classification: stand-by behind the underproof 0-15mm of being crushed to of crystallization (reach to return with raw material after a certain amount of be mixed together batching, add-on is the 10-20% of raw material total amount);
(5) classified post crystallization is qualified, carries out fragmentation, check, packing, warehouse-in.
Embodiment 3:
Referring to accompanying drawing, a kind of method of producing the high calcium and low silicone slag former with corundum arc furnace may further comprise the steps:
(1) batching: raw material crushing to 2-15mm, is pressed following proportioning mix, wrought aluminium alumina 4500kg, unslaked lime 5000kg, calcite 3kg, coke 2kg then;
(2) melting: the raw material gradation drops into the 3000KVA corundum to be toppled in the electric arc furnace, drops into 3000kg before the blow-on, and the clout average mark is thrown for 3 times, after stablizing 20-30min, drops into current/voltage, each 2333kg that throws, the whole fusions of the bed of material to the stove that finish that feed intake, charge level is rubescent and form soft lid and get final product blowing out;
(3) fall stove, connect bag, cool off;
(4) classification: stand-by behind the underproof 0-15mm of being crushed to of crystallization (reach to return with raw material after a certain amount of be mixed together batching, add-on is the 10-20% of raw material total amount);
(5) classified post crystallization is qualified, carries out fragmentation, check, packing, warehouse-in.
Through checking the foregoing description products obtained therefrom:
1, Chemical Composition such as following table:
2, color is an orange, crystallization gloss obviously, oily luster arranged.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (2)
1. method of producing the high calcium and low silicone slag former with corundum arc furnace may further comprise the steps:
(1) batching: raw material crushing to 2-15mm, is pressed following proportioning mix then,
Wrought aluminium alumina 42～45%, unslaked lime 48%～53%, calcite 3～4%, coke 1～2%;
(2) melting: the raw material gradation drops in the stove, drops into the 10-30% of total stuff amount before the blow-on, and 3-4 throwing of clout average mark drops into after current/voltage is stablized 20-30min, the whole fusions of the bed of material to the stove that finish that feed intake, and charge level is rubescent and form soft lid and get final product blowing out;
(3) fall stove, connect bag, cool off;
(4) classification: crystallization is underproof be crushed to behind the 0-15mm stand-by;
(5) classified post crystallization is qualified, carries out fragmentation, check, packing, warehouse-in.
2. method of producing the high calcium and low silicone slag former as claimed in claim 1 with corundum arc furnace, wherein: classified crystallization is underproof be crushed to 0-15mm after, be mixed together batching with raw material, add-on is the 10-20% of raw material total amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100510067A CN100381584C (en) | 2006-04-14 | 2006-04-14 | Method for producing slag forming agent contg. high calcium and low silicone by corundum arc furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100510067A CN100381584C (en) | 2006-04-14 | 2006-04-14 | Method for producing slag forming agent contg. high calcium and low silicone by corundum arc furnace |
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| Publication Number | Publication Date |
|---|---|
| CN1831147A CN1831147A (en) | 2006-09-13 |
| CN100381584C true CN100381584C (en) | 2008-04-16 |
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| CNB2006100510067A Expired - Fee Related CN100381584C (en) | 2006-04-14 | 2006-04-14 | Method for producing slag forming agent contg. high calcium and low silicone by corundum arc furnace |
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| CN104058610B (en) * | 2014-05-22 | 2016-01-20 | 韶关学院 | A kind of electric steel furnace slag property optimized handling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001032583A1 (en) * | 1999-11-03 | 2001-05-10 | The National University Of Singapore | A method for producing oxide compounds |
| CN1374407A (en) * | 2001-03-14 | 2002-10-16 | 张梦显 | Fe-Ca-Al slag and its prepn |
| CN1669930A (en) * | 2005-04-05 | 2005-09-21 | 郑州登峰熔料有限公司 | Production method of high-calcium type calcium aluminate |
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- 2006-04-14 CN CNB2006100510067A patent/CN100381584C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001032583A1 (en) * | 1999-11-03 | 2001-05-10 | The National University Of Singapore | A method for producing oxide compounds |
| CN1374407A (en) * | 2001-03-14 | 2002-10-16 | 张梦显 | Fe-Ca-Al slag and its prepn |
| CN1669930A (en) * | 2005-04-05 | 2005-09-21 | 郑州登峰熔料有限公司 | Production method of high-calcium type calcium aluminate |
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| CN1831147A (en) | 2006-09-13 |
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