The industrial structure of the hottest inorganic

2022-08-23
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Inorganic salt: the industrial structure is changing with each passing day

inorganic salt: the industrial structure is changing with each passing day

April 23, 2019

in the 70 years since the founding of new China, the domestic inorganic salt industry has developed from low output and few products in the early stage, and most technologies are controlled by others. To the present, the annual production capacity exceeds 100 million tons, and it can produce about 1500 product varieties, including nano, whisker, high purity The development of fine inorganic products modified by surface treatment is outstanding -

since the 70th anniversary of the founding of new China, the development and changes of the domestic inorganic salt industry can be described as earth shaking, and the industrial structure is changing with each passing day. Over the past 70 years, the inorganic salt industry has not only greatly increased the production capacity of various products, but also increased hundreds or even thousands of times; The variety of products has also been enriched, and some gaps in the early stage of reform and opening up, such as white carbon black, have been filled. China has now become the largest inorganic salt producer, exporter and consumer in the world, making great contributions to the development of the national economy

at the beginning of the founding of new China, China's inorganic salt industry not only had low product output, few varieties, but also low technical level. At that time, phosphate mainly used wet process phosphoric acid as raw material, and several varieties such as sodium dihydrogen phosphate, sodium dihydrogen phosphate and trisodium phosphate were successively produced in Shanghai, Liaoning, Hebei and other places. The equipment used is only simple devices such as plate and frame filter, open Fu Xiangsheng mouth evaporation pot, jacketed crystallizer, etc. Until the early 1960s, the industry began the production of thermal phosphoric acid, and the quality of phosphate has been greatly improved, but there are only more than 20 varieties. Not only phosphorus chemical products, but also other products. At that time, the annual production capacity of calcium carbonate was only hundreds of thousands of tons, and the annual production capacity of hydrogen peroxide was only tens of thousands of tons. The technology of insurance powder and other industries was also suppressed by foreign companies, and their development was greatly limited

after the reform and opening up, the national economy has made great strides, and the inorganic salt industry has entered a period of leapfrog development. Since the 1980s, the production scale of the inorganic salt industry has been expanding, the production capacity and output have increased rapidly, and the variety of products has been increasing. In terms of output and varieties, the annual production capacity of hydrogen peroxide has reached more than 10 million tons, and the annual production capacity of calcium carbonate is more than 30 million tons; Some products that were blank in the early days of the founding of the people's Republic of China achieved zero breakthroughs. For example, after we introduced the PPG silica device from the United States, we formed our own technology through digestion, absorption and RE development. At present, the annual production capacity of silica has exceeded 2million tons, becoming the world's largest producer

over the past 70 years, the quality standards of inorganic salt industrial products have been continuously in line with international standards, the brand cultivation has been continuously deepened, and the product grade has also been continuously improved. Nowadays, the subsidy amount of domestic nano, whisker, high-purity, surface treatment modified fine inorganic products is 80% of the annual insurance premium, and the development of products is outstanding; Domestic electronic grade phosphoric acid, hydrofluoric acid, hydrogen peroxide, hydrobromic acid, etc. are accepted by users at home and abroad; Inorganic chemical products such as flame retardant and fire extinguishing agents, catalysts and catalyst carriers, pharmaceutical grade and high-purity reagent grade have a good development momentum. The main problem of traditional materials is random adsorption/adhesion to proteins/cells; The production capacity and output of nuclear grade boric acid, high-end magnesium oxide, magnesium hydroxide and other products generally increased; Various functional calcium carbonate products with high added value have developed rapidly in medicine, toothpaste, ink, adhesives, plastics, rubber and other industries; High dispersive white carbon black has gradually replaced part of carbon black in green tires, and ultra-fine silicon dioxide used in coatings, toothpaste, silicone rubber, plastics and thermal insulation materials has also been better developed; Inorganic functional materials, such as lithium hexafluorophosphate, lithium iron phosphate, lithium manganate, ternary materials and other high-tech new products required for lithium-ion batteries, have become the focus of industry development with the rapid development of emerging energy industry; Among electronic grade inorganic chemicals, ultra clean and high-purity electronic grade products, such as electronic grade H2O2, H3PO4, phosphate, HF, PH3, etc., have had a positive impact on improving the competitiveness of China's integrated circuit manufacturing industry

over the past 70 years, the industrial layout has been continuously optimized. Yunnan, Guizhou, Sichuan and jaw provinces, which are rich in hydropower and phosphate resources, have carried out the optimal combination of "ore electricity phosphorus chemical"; The production of barium carbonate and barium sulfate was relocated to Guizhou, Shaanxi and other resource areas; Qinghai and Xinjiang have built large-scale chemical bases for potash fertilizer (potassium salt), and regional industrial clusters and belts have taken shape

industrial agglomeration capacity also continued to improve. Inorganic silicides are concentrated in Qingdao, Laizhou, Weifang and Fujian, Shandong Province, which are rich in resources; Inorganic fluorides are mainly concentrated in Henan, Zhejiang and Hebei; Cyanide industry is concentrated in the southwest and northwest regions; The phosphate industry is further concentrated in the resource advantage areas of Yunnan, Guizhou, Sichuan and Hubei; The light calcium carbonate industry has formed five production bases in Jingxing, Hebei, Yongfeng, Jiangxi, Jiande, Zhejiang, Hezhou, Guangxi and Lianzhou, Guangdong; Inorganic silicide, inorganic fluoride, phosphorus chemical industry, potassium salt, potassium fertilizer, chlorate, cyanide, peroxide and other industries are coupled with the upstream and downstream, extending the industrial chain, realizing the effective utilization of resources and improving the competitiveness of enterprises

industrial concentration is still increasing. At present, there are three domestic enterprises with an annual production capacity of more than 50000 tons of chromium salt, 4 which continue to strengthen personnel training, accounting for 51% of the total domestic production capacity; There are 7 enterprises with an annual production capacity of more than 50000 tons of silica, accounting for 59% of the country's total production capacity; The production capacity of the top three enterprises in sodium cyanide production capacity accounts for more than 83% of the total national production capacity

not only that, over the past 70 years, the industry has also actively promoted cleaner production, raised the entry threshold for heavily polluting products such as yellow phosphorus, chromium salt, cyanide, carbon disulfide, etc., and is committed to strengthening the comprehensive utilization of high-temperature tail gas, circulating water, solid waste and other resources, eliminating high energy consumption and high pollution processes and equipment, and actively applying cleaner production and energy-saving and emission reduction technologies. At present, the yellow phosphorus tail gas of some enterprises can be fully utilized, the utilization rate of detoxification and disposal of chromium salt chromium containing waste residue has reached 100%, and the reduction, recycling and standardization level of the whole industry has been gradually improved

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