INDUSTRY APPLICATIONS

INDUSTRY APPLICATIONS

Slag discharge valve in the ironmaking slag treatment system

The tail slag flushing three eccentric butterfly valves in the tail slag process pipeline area of the iron smelting slag treatment system; the medium is slag powder.
Detailed description

1. Introduction to On-site Application Conditions

Tail slag flushing three-eccentric butterfly valve in the tail slag process pipeline area of the ironmaking slag treatment system; the medium is slag powder.

2. Problems and Challenges Faced

The flushing valve in the tail slag process pipeline area of the ironmaking slag treatment system has been using a three-eccentric, multi-layer hard-sealed butterfly valve from a domestic brand. After about 10 days of online use, the valve showed internal leakage; this caused a negative impact on the operating environment for on-site personnel and affected normal production.

3. EICMATION's Solution

Preliminary analysis indicates that the reason for internal leakage after about 10 days is likely due to severe damage or wear caused by slag powder scouring the multi-layer graphite sealing surface, resulting in damage to the graphite layer of the three-eccentric, multi-layer sealing ring of this domestic brand, leading to valve seal failure. After analyzing the on-site process parameters, EICMATION technicians ultimately adopted a three-eccentric, all-metal hard-sealed butterfly valve (FVA22D3625). The valve seat and butterfly plate seals of this structure both use STL hardening treatment to increase the hardness and wear resistance of the sealing surface. It has been in use at the customer's site for over three months, and the overall valve operation is quite good.

Contact Information

AISENBERG GmbH

Tel: +49 02161 3046062
E-mail: info@eicmation.de
Address: Willicher Damm 129, 41066 Mönchengladbach, Germany

Contact Information

China Headquarters: Eic (Shanghai) Pipeline Control System Co., Ltd.

Tel: +86 021 6380 85731
Email: info@eicmation.com

Address: 16F, Changhui Building, No. 799, Yinxiang Road, Jiading District, Shanghai

Contact Information

China Factory: Eicmation (Jiangsu) Fluid Control System Co., Ltd.

Tel: 400-670-1280
Email: info@eicmation.com
Address: North Shengye Road, Valve Industrial Park, Nanyang Town, Dafeng District, Yancheng City, Jiangsu Province

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