Raw salt is the main production material for caustic soda and soda ash industries. At present, the two alkali enterprises face difficulties in their production and operations due to the problems of overcapacity and excessive raw material costs. Technological innovation and cost reduction are the key to solving this problem. Relying on local salt mineral resources, some industry enterprises in Jiangsu have explored ways to reduce costs and enhance competitiveness in their production practices.
There are abundant salt mineral resources in Jiangsu Province, such as the Huai'an salt mine in the hinterland of northern Jiangsu, the Jintan salt mine in Changzhou in southern Jiangsu, and the Fengxian salt mine in Xuzhou bordering Sulu and Yuzhou. With the development and use of these salt mines, more and more Jiangsu two alkali enterprises have fully utilized the local salt mineral resources and set up factories at the site of the salt mines to pursue the lowest raw material procurement costs. At the same time, they sought to increase the proportion of salt brines in production and use brine instead of refined salt for production.
At present, there are 23 caustic soda companies in Jiangsu. Except for a few households that use sea salt, most other companies make full use of local salt resources.
Jiangsu Anbang Electrochemical Co., Ltd. has its own salt mines and thermal power plants. The underground rock salt can be exploited for an area of ​​1.8 square kilometers and reserves of 110 million tons of sodium chloride. At present, the company has already played five sets of salt wells, all using the "double-well convection" approach. The existing halogen extraction capacity can balance the production capacity of caustic soda production by 300,000 tons. The advantages of using brine instead of refined salt are obvious. According to estimates, Anbang's average salt consumption per ton of caustic soda is 1.54 tons, which accounts for 17% of the cost, and the refined salt-to-plant tax price is 330 yuan per ton. However, the cost of using self-produced brine to reduce salt is only 130 yuan/ton, and the halogen ratio is close to 90%. The low salt cost makes their caustic soda have a strong market competitiveness and profitability.
In order to improve the advantages of salt and halogen resources, Jiangsu Salt Industry Corporation cooperated with the local salt field in northern Jiangsu to start a salt and sun salt production project with a capacity of 1 million tons of mineral brine. The pipeline from the Huai’an, northern Jiangsu Province, sent the mineral brine to Lianyungang over 100 kilometers away. Jinqiao and Yancheng Chenjiagang, two major salt fields, use the beach to dry the salt to provide local salt chemical industry with low-cost salt resources and promote the development of circular economy.
At present, with the completion of the paving pipeline for ore-bearing brines, many companies such as Zhangjiagang Shuangshi Group and Changshu Liwen Company began to use salt brine instead of sea salt, while Nantong Jiangshan, Suhua, Yangon, Zhenjiang Thorpe Group and other chlor-alkali Enterprises, are also trying to gradually increase the proportion of halogen. In addition, the Fengxian Industrial Park in Xishan, jointly built by Wuxi and Xuzhou, has realized the transportation of brine pipelines, so that the caustic soda enterprises in the chemical parks in Fengxian and Pei County all use salt brine production.
Soda also faces the pressure to reduce manufacturing costs. The use of salt and brine as raw materials is also an excellent choice. Sinopec Nanhua Lianyungang Soda Plant is one of the three largest soda ash producers in China and the only large-scale soda ash producer in the southeastern coastal area. Its annual production capacity is 1.3 million tons. Due to the company's pipeline production of soda ash from the Huai Safety Department, even in the sluggish industry, it can maintain a good operating performance.
At present, the 500,000 tons/year joint alkali project of Xuzhou Fengcheng Salt Chemical Co., Ltd. invested by Wuxi Yiduo Group Company is under construction. Xuzhou Jintian Chemical Co., Ltd., which has a production capacity of 100,000 tons/year of aniline, also took a competitive advantage in the mineral brine, and settled in Fengxian Salt Chemical Industrial Park one after another.
With the continuous development of mining brine and sun-burning projects and the full utilization of the three major salt mineral resources in Huai'an, Jintan and Fengxian, Jiangsu's two alkali salts have gradually shifted towards localization and full-halogenation. Jiangsu's related companies will occupy significant advantages in the cost of salt, and the competitiveness of enterprises will be greatly enhanced, benefiting the long-term.
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