DHHI is a leading and backbone enterprise in large sub-merged arc furnace industry in China. It leads the development of domestic sub-merged arc furnace towards the direction of large, energy saving, environment friendly and intelligence and holds complete core technologies for sub-merged arc such as process technology, control technology and mechanical discharging technology, etc. As the drafter of national industrial standard for sub-merged arc furnace, some technologies of DHHI take the lead in China.

An intelligent solution for smelting engineering, integrated with energy efficiency evaluation system, fault diagnosis system, scheduling management system, life cycle management system, intelligent inspection system, digital twin system and remote operation and maintenance platform, based on advanced Internet of Things logics, big data analysis, mature instrument detection, with the intelligent control model as the core. This system has been used for Xintaiyuan ferrochrome smelting and Shuofeng ferrochrome smelting projects and achieved good results.

Advantages: including control network, core network, management network and four-level cloud factory network, compatible and open; provided with in-depth defence measures combining software and hardware, with safety; simulation performed according to real-time parameters and model; proper operating parameters recommended and the actual position of electrode working end calculated as per the process and operating parameters of sub-merged arc furnace; multi-dimensional energy efficiency evaluation system to output the comprehensive evaluation for process value on a real-time basis and feed the operation suggestions back in time; multi-dimensional equipment health degree model to predict key equipment failure and diagnose the causes of failure.