Scrap Preheating EAF System Project of Indonesia Su Steel

Project Basic Information

• Project Name: Scrap Preheating EAF System Project of Indonesia Su Steel
• Release Date: 2022.10.01
• Processed Material: Scrap Steel
• Core Requirements: Improve scrap steel addition ratio, adapt to local working conditions (coal gas resources/site conditions), cross-border installation and commissioning support
• Equipment Model: QSFZL2200*48000 Converter Scrap Preheating Vibrating Conveyor System
• Key Parameters: Heating and conveying capacity ≥150t/h, preheating temperature 700-800℃, scrap steel addition ratio increased to about 40%, adapted to coal gas calorific value 4000-4500kJ/Nm³
• Service Highlights: Full-process support for international trade, dispatching professional technical team to Indonesia for on-site installation, commissioning and personnel training

I. Customer Background and Challenges

As a key local iron and steel production enterprise, Indonesia Su Steel is committed to improving steelmaking capacity and resource utilization efficiency, but has long been restricted by many pain points of traditional scrap steel preheating technology: the scrap steel addition ratio is only about 20%, over-reliance on molten iron leads to high production costs; the existing preheating equipment has unstable temperature (mostly below 600℃) and insufficient processing capacity, which cannot match the converter production rhythm; at the same time, the characteristics of local coal gas resources (calorific value fluctuation 4000-4500kJ/Nm³), tropical climate conditions and site size constraints put forward higher requirements for equipment adaptability.

As an international trade cooperation project, the customer additionally faces challenges such as cross-border equipment transportation, overseas installation and commissioning, technical docking and after-sales response. The customer urgently needed a scrap steel preheating system with advanced technology, adaptability to local working conditions, and full-process cross-border services to break through production bottlenecks, reduce costs, and ensure the smooth landing and operation of the project overseas.

II. Our Solution

Based on years of experience in scrap steel preheating technology and international trade services, Henan Quanshun Vibration Equipment Co., Ltd. tailor-made the QSFZL2200*48000 scrap preheating EAF system for Indonesia Su Steel’s working conditions and cross-border needs, and provided integrated services of “equipment customization + cross-border transportation + on-site installation + commissioning and training” to ensure the smooth implementation of the entire project.

Core Advantages and Targeted Design of the System:

1. Precise Adaptation to Working Conditions: Optimize the parameters of the combustion system to adapt to the local coal gas calorific value fluctuation of 4000-4500kJ/Nm³, ensuring the preheating temperature is stable at 700-800℃; the overall structure of the equipment is adjusted according to the site size in Indonesia, with a total layout length of 48m and an internal cross-sectional size of the conveyor of 2200×800mm, perfectly fitting the on-site layout.
2. Core Performance Breakthrough: Continue the domestically pioneering three major technical advantages, the scrap steel addition ratio is increased to 40%, the heating and conveying capacity is ≥150t/h, which is accurately matched with the converter production rhythm; the dynamic sealing device (negative pressure 267Pa, air volume about 30000Nm³/min) effectively inhibits flue gas overflow, adapting to local environmental protection requirements.
3. Cross-border Service Guarantee:

• Transportation Stage: Adopt export-standard packaging with moisture-proof and rust-proof treatment, coordinate international logistics to complete the whole-process transportation of equipment from Xinxiang, Henan to Indonesia Su Steel’s factory area, ensuring the equipment is intact.
• Installation Stage: Dispatch 3 senior technical engineers to Indonesia for on-site work, completing equipment assembly, pipeline connection, electrical commissioning and other work within 20 days, strictly following local construction specifications and safety standards.
• Training Stage: Provide a 5-day special training for the customer’s operation and maintenance team, covering equipment principles, operation processes, troubleshooting, etc., to ensure localized independent operation and maintenance.

4. Stable and Durable Design: Key components of the equipment (trough, vibrator, hood) are made of high-temperature resistant and corrosion-resistant materials, adapting to Indonesia’s tropical climate; the exciter motor (160kW frequency conversion speed regulation) and hydraulic system (pressure 14MPa) have good anti-interference performance, ensuring long-term stable operation.

III. Core Equipment Parameters (QSFZL2200*48000)

IV. Implementation Effects and Customer Value

After the successful commissioning and operation of the QSFZL2200*48000 scrap preheating EAF system in Indonesia Su Steel, it quickly became the core equipment in the steelmaking section, creating multiple values for the customer:

1. Dual Optimization of Capacity and Cost: The scrap steel addition ratio increased from 20% to 40%, and the steelmaking capacity increased by 25% under the same molten iron consumption; the reliance on molten iron was reduced, the production cost per ton of steel was reduced by about 120 yuan, and the annual cost savings exceeded 10 million yuan.
2. Smooth Landing of Cross-border Project: Through professional export packaging, logistics coordination and on-site installation services, the equipment was commissioned and put into use on schedule without any cross-border transportation or installation failures, and the project acceptance passed at one time.
3. Strong Operational Stability and Adaptability: The equipment is fully adapted to local coal gas resources and climate conditions, with a continuous operation failure rate of less than 1%; the service life of key components such as the preheating section hood and vibration device exceeds 1 year, with low maintenance costs.
4. Improvement of Localized Operation and Maintenance Capacity: Through special training, the customer’s team has proficiently mastered equipment operation and basic maintenance skills. The remote technical support and spare parts supply services provided by Henan Quanshun ensure worry-free subsequent operation.

V. Customer Evaluation

The international trade cooperation with Henan Quanshun Vibration Equipment Co., Ltd. is very successful! The QSFZL2200*48000 scrap preheating system they provided has perfectly solved the long-standing production capacity bottlenecks and cost pressures we faced. The scrap steel addition ratio has been increased to 40%, and the preheating temperature is stable above 700℃, which fully matches the converter production needs.

What is most worthy of recognition is their cross-border service capability: from equipment customization, international transportation to on-site installation and commissioning, the whole process is professional and efficient. Technical engineers were dispatched to Indonesia for on-site hands-on guidance, which not only ensured the smooth commissioning of the equipment, but also trained a professional operation and maintenance team for us. The equipment has been stable and reliable since operation, adapting to local coal gas resources and working conditions, and significantly improving our market competitiveness. Henan Quanshun is a trustworthy international trade partner, and we look forward to further deepening cooperation in the future!

• Company: Henan Quanshun Vibration Equipment Co., Ltd.