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metallurgical materials

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Metallurgical Materials

Rice Husk Ash (RHA - 탄화, 회화, 과립 왕겨) - 제강용 보온제로서, 용강의 표면응고 속도를 최대한 억제하며 단열 보온 효과가 뛰어나 Turn Dish, Ladle, 및 Ingot 압탕에 사용된다. 주 성분은 Carbon과 SiO2이다. - 탄화왕겨 : C 15%~50% - 회화왕겨 : C 5%max - 과립탄화왕겨 : C 15%~50%, 탄화왕겨의 Granule화 - 과립회화왕겨 : C 5%max, 회화왕겨의 Granule화

용도적용표

Item

Type

Spec.

탄화왕겨(High C RHA) Powder Carbon : 15~50%
Granule
탄화왕겨(Low C RHA) Powder Carbon : 5% Max
Granule

정련제 : 여러 규격의 강종을 생산하기 위한 정련제를 사용한다.

Q/DHQ101

  • 1. Name of Product : Purifying Agent for Molten Steel.
  • 2. Type of Product :
    • HW - Patented product, patent No. ZL99127560.8
    • HP - Patented product, patent No. ZL01141396.4
  • 3. Applications :
    • HW - Being used in the process of making spring steel automobile steel
    • HP - Being used in the process of making tire core steel
  • 4. Technical Specifications
    • A. Chemical specifications
Chemical specifications

SPECS(%) / TYPE

HW

HP

SiO2 59─63 50─54
CaO 30─33 39─43
Al2O2 ≤3.5 ≤3.5
MgO ≤1.0 ≤1.5
Fe2O2 ≤1.5 ≤1.0
CaF2 5.5─5.7 ≤0.1
S ≤0.08 ≤0.08
P ≤0.05 ≤0.05
C/S 0.53±0.08 0.78±0.1
  • B. Physical Specifications
Physical Specifications

SPECS(%) / TYPE

HW

HP

Mosture(%) ≤0.5 ≤0.5
Size(1-6mm)% ≥90 ≥90

Q/DHQ102

  • 1. Name of Product : Pre-molten Ca-Al combined desulphurizer
  • 2. Type of Product : Special steel 09 GL-50 GL-80
  • 3. Applications :
    • Being used in RH&LF to refine the molten steel, it can get rid of S, O and contaminationis and improve the fluidity of the slag. Especially the grade special steel 09, because of its low content of TiO2, SiO2 and F, this product has good effect during refinery of special steel.
  • 4. Technical Specifications
    • A. Chemical specifications
Chemical specifications

SPECS(%) / TYPE

Special steel 09

GL-50

GL-80

CaO 41-49 45-59 45-55
Al2O2 36-44 32-38 38-48
TiO2 ≤0.09 ≤1.5 ≤1.8
SiO2 ≤3.0 ≤5.0 ≤8.0
Fe2O2 ≤1.0 ≤1.5 ≤1.5
MgO ≤3.0 ≤4.0 ≤5.0
F ≤0.01 ≤1.0 ≤1.0
  • B. Physical Specifications
Physical Specifications

SPECS(%) / TYPE

Special steel 09

GL-50

GL-80

Mosture ≤0.5 ≤0.5 ≤0.5
Size 3-30mm

≥90

3-50mm

≥90

3-50mm

≥90

Q/DHQ103

  • 1. Name of Product : Reducing agent for molten slag
  • 2. Type of Product : YH-A YH-B
  • 3. Applications :
    • This product is an agent for deoxidizer and slagging. It can improve the fluidity of the molten slag produced in refining process, make Al2O3-seperation easier, prevent from the defuse of the impurities in the molten slag to guarantee producing high quality steel. Furthermore, when there is difficulty for the deoxized molten steel to be deoxized again in the next steps, this product can be replace the expensive metal aluminium as the deoxidizer to cut the producing cost.
  • 4. Technical Specifications
    • A. Chemical specifications
Chemical specifications

SPECS(%) / TYPE

YH-A

YH-B

M-AL 35-40 25-30
CaO 20-30 20-30
SiO3 ≤10 ≤10
AI2O3 ≤5 ≤10
Fe2O2 ≤2.0 ≤2.0
  • B. Physical Specifications
Physical Specifications

SPECS(%) / TYPE

YH-A

YH-B

Mosture(%) ≤1.5 ≤1.5
Size(1-6mm)(%) 6-40mm 6-40mm

Q/DHQ105

  • 1. Name of Product : Basic material to pro-melt the protective slag
  • 2. Type of Product : HA HE HT
  • 3. Applications :
    • Being used as the basic pre-melt material for different kinds of continuous casting protective slag. The specs can be adjusted according to the customers' requires.
  • 4. Technical Specifications
    • A. Chemical specifications
Chemical specifications

SPECS(%) / TYPE

HA

HE

HT

SiO2 44.5-45.5 50-55 41-47
CaO 46.5-49.5 14-19 41-47
Al2O3 2.4-3.6 13-18 ≤4.0
MgO <1.2 ≤8.0 ≤1.5
Fe2O3 ≤0.5 ≤3.0 ≤1.0
F 3.3-4.7 0-2  
C/S 1.1±0.05    
Na2O     6-8.5
  • B. Physical Specifications
Physical Specifications

SPECS(%) / TYPE

HA

HE

HT

Mosture(%) ≤0.5 ≤0.5 ≤0.5
Size(1-6mm)(%) ≥90 ≥90 ≥90

Q/DHQ106

  • 1. Name of Product : Deoxidizer and Desulfurization Agent
  • 2. Type of Product : GZA-20 GZA-30
  • 3. Applications :
    • Being used in the process of the refinery out of the furnace, restraining the emerge of FeO, promoting to get rid of O, S, adjusting the viscosity of the cinder, improving the fluidity of the cinder, preventing the temperature on the surface of the molten steel going down. Because of its low price, this product can cut down the producing cost greatly.
  • 4. Technical Specifications
    • A. Chemical specifications
Chemical specifications

SPECS(%) / TYPE

GZA-20

GZA-30

AI 15-25 26-35
AI2O3 ≥45 ≥30
SiO2 ≤12 ≤12
MgO ≤12 ≤10
Fe2O3 ≤2.0 ≤2.0
CaO ≤10 ≤10
  • B. Physical Specifications
Physical Specifications

SPECS(%) / TYPE

GZA-20

GZA-30

Mosture(%) ≤0.5 ≤0.5
Size(1-6mm)(%) ≥90 ≥90