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MD Desk

Mr. Zhang Jiuzhou
(Managing Director)
Office Tel: 0091 11 42895600,
Fax: 0091 1142895628

Steel Making & Continuous Casting

6MT Steel Making Project for Cangzhou Zongheng Industries Ltd.

Customer:Cangzhou Zongheng Industries Ltd.

Project Schedule: 2007-2009

Type of Contract: EPC

Contract Content: All systems of 6.0 Mt Steel Making Workshop (including converter, LF, RH, CCM and all auxiliary systems)

Capacity: 6MT

Main technical features :

  1. Hot metal pretreatment system: desulfurization with single injection of granulated magnesium.
  2. Converter system: combined top and bottom injection, slag splash protection and top relining process are adopted.
  3. Evaporation cooling and forced circulating cooling fume duct system are adopted to extend life time of fume duct, reduce investment and production cost and increase steam and gas recovery.
  4. Complete secondary dedusting system is provided to collect the fume and dust of all points to prevent environmental pollution and improve working condition.
  5. New technologies adopted for CCM include: mold width adjustment and taper adjustment technology, automatic positioning technology of segment in supporting frame, technology adopting one hydraulic cylinder for adjusting driven roller of inner curve by lifting and mold hydraulic oscillation.

Refer to the followings for main technical data of the converter and casting shop:

s no Phase I Phase II
1 Converter nominal volume and number 
1 x 150t   
3×150
2 Converter working mode 1 for injection 3 for injection
3 Avg. tapping quantity 165 t 
165 t
4 Max. tapping quantity 180 t 180 t
5

Tap to tap cycle

Where: oxygen injection time

~38 min

15 min

~38 min

15 min

 

 

6 Avg. liquid steel production capacity of the shop 6270 t 
18810 t
7 Annual effective working days 298 days 298 days
8 Annual production of liquid steel 
1x150t 3x150t
9 LF numberx nominal volume 1×150t 3×150t
10 RH number x nominal volume 1x150 t
11 Hot metal desulfurization number x nominal volume 1×150t 
3×150t

Main data of CCM is as follows:

Description Unit 
Value of phase I 
Value of phase II
CCM type bending and  Straight curved slab caster straight curved slag caster Continuous bending and straightening Straight mold with continuous
CCM number xstrand number
1 x2 2 x2 set x strand
Casting section (cold size) m
Thickness 180, 200 200, 230
Width 
700-1130 1000-1450
Cut to length m 10 10
CCM casting speed range m/min 0.3-2 0. 3-2
Metal yield
97 97
CCM annual production 1000 t slab 180 360
Caster availability
~83 ~75
Steel grades Common carbon steel, high quality carbon steel Common carbon steel, high quality
carbon steel Low alloy steel, pipeline steel Low alloy steel, pipeline steel

Highlights:

The project adopts EPC mode: advanced process flow, high product quality, high production, rational coordination with refining process, rich product types, adopting primary and secondary dedusting system to considerably reduce emission of gas pollutant, recovery of gas, steam and scale, hot transfer of slab, etc. with reduced comprehensive energy consumption, improved profiting level of customer, with considerable economic and social benefits.

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