The most advanced lead smelting process is bottom-blowing lead furnace-smelting, and HollySys is the sole supplier for the control system of the bottom-blowing lead smelting process (SKS) of the China Nonferrous Design Institute. To date, HollySys has implemented over 20 bottom-blowing furnace facilities. HollySys uses the advanced and functionally-stable HOLLiAS MACS DCS hardware for the bottom-blowing facilities. The key aspects are redundant architecture, and low hardware power consumption, facilitating product cooling and boosting the products’ usable lifespan. With high hardware safety, all input and output signals use photoelectric isolation (every module channel is isolated from each other, and the module and field signals are also isolated from each other), largely reducing human-error induced module burnout during the implementation and maintenance process, which lengthens the master facility’s operating duration and reduces unplanned downtime, boosting production efficiency.
HollySys has a wealth of zinc smelting experience, where in 2006; it implemented a 100,000 tonne electrolytic zinc facility for Bayannaoer Zijin Non-Ferrous Metal Co., Ltd, and a 100,000 tonne zinc smelting boiling furnace facility in the West Ujimqin Banner. Whether it is the wet method or zinc pyro-metallurgy, HollySys has the successful experience and the qualified engineering capability.
Key zinc smelting control solutions provided by HollySys:
HollySys’ DCS system is widely applied in the aluminum oxide control systems and auxiliary systems used by different aluminum oxide companies, such as Eastern Hope Aluminum, Chiping Xinfa Huayu Aluminum Oxides, Guizhou Guanglu Aluminum Oxide, Weiqiao Aluminum Oxide, Guizhou Qizheng Aluminum Oxide, and Shandong Aluminum Aluminum-Oxide.
Control solutions provided by HollySys:
(1) Raw material mill DCS automation control system
(2) High pressure dissolution DCS control system
(3) Sedimentation and filtration control DCS control system
(4) Seed filtration and decomposition control system
(5) Evaporation control system
(6) Product filtering control system
(7) Roasting control and linkage
HollySys has a wealth of experience in calcium carbide projects, and has completed in succession air-tight calcium carbide facilities for Ningxia Dadi, Hubei Yihua, Inner Mongolia Erdos, Pingmei Group, Baotou Sea Level, Zhejiang Juhua, Inner Mongolia Yidong, and Wuhai Zhonglian. Calcium carbide furnace plants that have worked with HollySys include Dalian Heavy Industry, Sinosteel Jilin Electro-Mechanical Equipment Co., Ltd, Hohhot Nashun, and Jinzhou Tiancheng.
I. Air-tight calcium carbide furnace control and interlock solution provided by HollySys:
30,000kVA calcium carbide furnace control mainly includes material feed system, ring feeder, hydraulic pressure system, high-pressure system, furnace pressure control, and furnace gas cleaning.
Calcium Carbide Main Screen
(1) Material feeder system control
Every shift of the material feed system requires more than a hundred rounds of feeding, so the automatic feeding becomes a necessary measure to simplify the production operations.
配料系统 Material Feeding System
(2) Liquid compression system control
Hydraulic Oil System
(3) Ring feeder control
(4) Furnace bottom cooling system control
(5) Control of electric butterfly valve for furnace clean gas and smoke chimney and furnace waste gas and smoke chimney
II. Electric furnace control solution provided by HollySys
There are 2 types of extractable nickel resources in this world, which are sulfide deposits and oxide-ore deposits. A complete ferronickel facility would at least include 6 major process-related facilities which are the drying facilities, rotary kiln, electric furnace, pulverised coal facilities, refinery facilities, and the circulating water system. HollySys can provide automation control solutions for these 6 major process-related facilities.