Method for preparing steelmaking dust briquettes

A manufacturing method and dust technology, applied in the direction of improving process efficiency, etc., can solve problems such as briquette structure cracking, and achieve the effect of reducing the decline rate

Inactive Publication Date: 2018-08-21
LOTTE FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The reaction of the above chemical formula 1 is an exothermic reaction, so the heat generated in the above reaction will cause the volume expansion of the compact, and the structure of the compact will crack due to the tensile stress caused by the volume expansion.

Method used

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  • Method for preparing steelmaking dust briquettes
  • Method for preparing steelmaking dust briquettes
  • Method for preparing steelmaking dust briquettes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3 and comparative example 1～6

[0033] A mixture having a compounding ratio shown in Table 1 below was prepared. In Table 1 below, stainless steelmaking dust was used by purchasing stainless steelmaking dust whose calcium oxide content was known from a Korean steel company.

[0034] [Table 1]

[0035]

[0036] Syrup: SYSTRONICS, Syrup

[0037] Cellulose ether: Samsung Fine Chemicals,

[0038] Cellulose ether solution: 10% by weight cellulose ether solution, Samsung Fine Chemicals,

[0039] Each mixture having the composition of Table 1 above was stirred for 5 minutes using a stirrer (Erich). Thereafter, each of the above-mentioned stirred mixtures was extrusion-molded using a Briquette machine (HOISTDEST, JCB250T) to produce an oval-shaped briquette having a size of width 45 mm×length 22 mm×thickness 14 mm.

[0040] Evaluation example

[0041] (Evaluation of crushing strength)

[0042] 20 briquettes manufactured from mixtures having the compounding ratios of Examples 1 to 3 and Comparative Examp...

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Abstract

An embodiment of the present invention provides a method for preparing steelmaking dust briquettes, the method comprising the steps of: adding a cellulose ether-containing solution to steelmaking dustto prepare a mixture; stirring the mixture; and molding the stirred mixture.

Description

technical field [0001] The present invention relates to a method for producing a steelmaking dust briquette, and more specifically, to a method for producing a briquette by stirring and molding a mixture obtained by adding cellulose ether to steelmaking dust in the form of a solution. Background technique [0002] The ironmaking process is divided into an ironmaking process for producing crude steel from iron ore and coal, and a steelmaking process for improving the purity of the crude steel. [0003] Steelmaking dust is generated in a steelmaking process, for example, in a stainless steel manufacturing process. There is a large amount of iron in the generated steelmaking dust and metal components such as zinc may selectively remain, which may specifically contain iron (Fe), carbon (C), silicon dioxide (SiO 2 ), alumina (Al 2 o 3 ), phosphorus pentoxide (P 2 o 5 ), sulfur (S), molybdenum (Mo), calcium oxide (CaO), magnesium oxide (MgO), chlorine (Cl) and zinc (Zn), etc....

Claims

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Application Information

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IPC IPC(8): C22B1/24C22B1/242C22B1/244
CPCC22B1/24C22B1/242C22B1/244Y02P10/20
Inventor 金兜镐权峰瑨金兑轩崔洛运
Owner LOTTE FINE CHEM CO LTD
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