China
 

Under the quick development, with open hearth furnaces be obso eted. the metallurgical industry is stepped to transit into large scale converters. The slag splashing converter maintenance is, after steel is discharged from the converter, blow nitrogen gas with oxygen lance & splash the MgO carying lesidual slag homogeneously to the converter wall. The layer slag on the wall can protect the furnace lining efficiently. After utilization of this technique, the American LTV Steel Inc. has reached furnace campaigns of around 20000 heats. The converter's operation ratio reaches ratio reaches 97%. This technique is being introduced in countries & regions like Germany, Korea, Japen, Taiwan etc.

Many iron & steel enterprises in China is develiping their slag splashing converter maintenance techinques. As a result, the furnace campaigns in Taiyuan Steel, Chengde Steel, Chongqing Steel & Ma'Anshan Steel company are raised respectively from 1500 heats, 500 heats, 700 heats & 1100 heats to 12000 heats, 1500 heats, 8500 heats & 10200 heats. The all get enormous economic benefits.

One of the key technologies in the slag splashing converter maintenance is the proper control on the MgO content in the furnace slag. Practice proved that to add adequate amount of calcined magneisite briquette is the most effective method go reach this target. Therefor our company developed a series of super quality calcined magnesite briquette for slag splashing converter maintenance usage, to meet the demand from customers home & abroad. The specification is as following.

MgO content
lg. Loss
Bulk Density g/m3
residual water
size(mm)
91% +-1%
5% (max.)
1.8-2.0
1%(max.)
0-30mm (acc. to customer's requirement)
72% +-2%
25% (max.)
1.8-2.0
2%(max.)
30-60mm (acc. to customer's requirement)
65% +-1%
30% +-2%(max.)
1.8-2.0
3%(max.)
30-60mm (acc. to customer's requirement)


   It was the cooperation between Luoyang Refractory Material Research Institute. Wuhan Metallurgical Science & Technology University & our company that being the first in comestic, deverloped & presented the slag splashing converter maintenance technique. We researched to make it fit for each diffierent.

                


Address: Pailou Town, Haicheng City, Liaoning Province, China.
Postcode: 114207
Tel: +86 412 6103901
Fax: +86 412 3779797
E-mail: sales@chinarefractories.com

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