Chang Chun Group, founded in China Taiwan in 1949, has upheld the principles of integrity and excellence for over 55 years. With a focus on technology, quality, and customer service, it has grown into a large enterprise group in Taiwan, with products sold in over fifty countries worldwide.
Chang Chun Chemical (Jiangsu) Co., Ltd., initially invested 296.6 million USD, is located in Changshu Economic Development Zone, Jiangsu Province, covering approximately 100 hectares with over 1,000 employees. It produces twenty-five products and has facilities such as cogeneration plants and ports, current products include polyvinyl alcohol, epoxy resin, amine resin, light-induced corrosion-resistant dry film, plastic barrels, PBT, emulsion adhesives of polyvinyl acetate, and solvents etc..
Project Introduction
At the 2018 China Green Development Conference, the Ministry of Industry and Information Technology (MIIT) announced plans to accelerate the green transformation of traditional industries, emphasizing energy-saving supervision for key energy-consuming enterprises and equipment. Accordingly Chang Chun Chemical responded to MIIT's call to initiate plans to upgrade the entire factory's energy efficiency.
Solutions
Equipment involved in Chang Chun Chemical's energy efficiency upgrade include fans, pumps, mixers, conveyors, and compressors etc. Although these equipment were from different brands, after comprehensive consideration, Weima Electric provided a solution featuring explosion-proof motors of the TEB4 model with IE4 energy efficiency standards from TECO.
The upgrade project took four years to be completed from 2018 to 2022, during this period Weima Electric supplied Chang Chun Chemical with a total of 882 TECO TEB4 explosion-proof motors ranging from 0.75 kW to 75 kW, 14,409 kW in total.
Customer Value
After this energy efficiency upgrade, Chang Chun Chemical's motor efficiency improved from IE2 to IE4, not only aligning with MIIT's requirements, but also achieving energy savings and reducing running costs.
By rough calculations, after the energy efficiency upgrade for Chang Chun Chemical, their annual electricity cost saves approximately 3.42 million RMB which will reduce losses by about 3%.
Moreover, standardizing all equipment under the TECO brand will facilitate easier maintenance in the future.
Energy Saving Calculation Formula:
TECO standard IE2 motor: 55 kW-4P
Energy efficiency grade: GB3/IE2
Efficiency value: 93.5%
TECO IE4 motor: 55 kW-4P
Energy efficiency grade: GB1/IE4
Efficiency value: 95.7%
Electricity Cost Savings Calculation:
1) Total Cost = Initial Cost + Operational Cost
2) Annual Electricity Cost Savings (IE2->IE4) = kW * (100/IE2 - 100/IE4) * operating hours per year * electricity price per kWh
3) Savings Calculation Method:
Example: For a 55 kW-4P motor operating 8000 hours annually,
When upgrading from IE2 efficiency of 93.5% to IE4 efficiency of 95.7%,
WEIMA ELECTRIC Supplied HV Motors to ArcelorMittal Poland S.A.
Enterprise Introduction
ArcelorMittal S.A. is a Luxembourg-based multinational steel manufacturing corporation headquartered in Luxembourg City. It was formed in 2006 from the takeover and merger of Arcelor by Indian-owned Mittal Steel. ArcelorMittal is the second largest steel producer in the world, with an annual crude steel production of 78 million metric tons as of 2022. It is ranked 197th in the 2022 Fortune Global 500 ranking of the world's largest corporations. It employs around 154,000 people and its market capital is $20 billion. The total value of company assets is estimated to be around $94 billion.
Project Introduction
The compressor equipment units equipped with a 2250HP-2P high-voltage motor from TECO used in ArcelorMittal Poland S.A. steel plant were purchased in 2006 which has been running steadily for 18 years that has been highly recognized by the End User. Due to massive production needs, ArcelorMittal Poland S.A needs to purchase three high-voltage motors with similar specifications.
Solutions
According to the technical requirements submitted by ArcelorMittal's technical team, Weima Electric has provided it with the most cost-effective semi-enclosed (IP23) steel frame high-voltage motor model AMZK produced by WUXI TECO Elec. & Mach. Co., Ltd - TECO Factory in Wuxi, China. The semi enclosed squirrel cage induction motor was produced by TECO adopted high-quality cast iron and steel plate frame which meets the international standards of IEC in design, manufacturing and testing. Compared with similar products in China, the quality and performance is excellent and world-class and has many characteristics like a compact structure, efficient energy saving, low vibration, low noise, superior performance, safety and reliability, convenient use and maintenance, which is suitable for various industrial application sites, Mines, Pumps, Compressors, Fans and other tool machines etc..
Nordgold, formerly known as Severstal Gold, is a subsidiary of the Russian steel company Severstal which is owned by Alexey Mordashov.
In early 2012, the Russian gold mining company Nordgold separated from Russian steel company Severstal and became a publicly listed company on the London Stock Exchange through global depositary receipts.
In 2010, Nordgold acquired Société Minière de Dinguiray (SMD) in Guinea and obtained the mining rights for the Lefa Gold Mine in Guinea.
The Lefa Gold Mine located in the provinces of Siguiri and Dinguiraye, 700 kilometers away from Conakry - the capital city of Guinea, has abundant gold reserves in Guinea.
The Lefa Gold Mine began mining since 2008 and was acquired by Nordgold in July 2010.
The Lefa Gold Mine has three large mining areas and some small mining areas. In 2015, Nordgold achieved good performance at the Lefa Gold Mine in Guinea, processing 6.558 million tons of ore and producing 214.2 thousand ounces of gold. The average mining cost was USD $1,164 per ounce and the total revenue was USD $260 million.
Project Introduction
Ball Mill is the key equipment in the gold ore beneficiation process, which directly affects the efficiency and product quality of gold ore. The motor equipped on the ball mill is of utmost importance. Once the motor malfunctions or stops, the losses caused are incalculable. So Nordgold planned to purchase two 3800kW-10P motors as backup machines.
Solutions
According to the technical specifications and outline dimensions of the original motor provided by Nordgold's technical team in Russia, WEIMA ELECTRIC provided TECO AEZT - the high voltage slip ring induction motor model with a fully enclosed steel frame, which is a new series of products optimized and designed applying the technology of TECO Westinghouse in the United States. Adopting the new process, it has many advantages like simplified equipment, reliable operation, investment savings, and reduced energy consumption. It is safe and reliable to operate, easy to install and maintain, and suitable for driving various common machineries such as ventilation fans, compressors, water pumps, coal mills, steel mills, and winches etc..
Received a request from an overseas mining factory to purchase a 2500KW high-voltage synchronous motor which drives a grinding machine.
Solutions
According to the requirements from the end-user, WEIMA ELECTRIC provides customer with the TECO T series high-voltage synchronous motor. The T series motor applies the advanced synchronous motor design software SMDS from TECO Westinghouse to design motors which have splendid performance, high reliability, and easy maintenance, which can be used to drive various blowers, compressors, water pumps, rolling mills, mining mills, and other regular machines.
