In the past 10 years, the calcium carbonate industry has developed rapidly. The world’s heavy calcium carbonate production capacity has increased by 5%-8%, while the growth rate of Chinese heavy calcium carbonate production capacity has reached 10%. Chinese heavy calcium carbonate industry has been presented a flourishing weather.
1.Chinese heavy calcium carbonate industry status
China mainly produces heavy calcium carbonate in Hezhou, Guangxi, Henan Nanzhao, Guangdong, Anhui, Zhejiang, Sichuan, Hubei, Jiangxi, Hunan and other places, calcium carbonate production and processing companies nearly 1,000, including a certain scale of production of heavy calcium carbonate enterprises. There are more than 400 companies and 32 light calcium companies.
(1) Industrial Intensification
The heavy calcium carbonate industry has gradually shifted from decentralized to intensive, and large-scale heavy calcium carbonate production enterprises with an annual production capacity of over 500,000 tons have been established in Hezhou, Guangxi, Lianzhou, Guangdong, Changxing, Zhejiang and Jiande, Zhejiang.
(2) Ultra-fine product
The products of heavy calcium carbonate products have grown from the first few varieties such as “Double Flying Powder” and “Three Flying Powder” to include fine powder, ultrafine powder, surface modification (active) powder, superfine slurry for papermaking, etc. Several major categories of more than 10 varieties.
At present, ultrafine heavy calcium carbonate accounts for 40% of the total heavy calcium carbonate production, and the proportion of active heavy calcium carbonate products also increases year by year. In 2013, the production capacity of active heavy calcium carbonate powder in China reached 600 Ten thousand tons.
2.Consumption structure and demand analysis of heavy calcium carbonate in China
At present, the world’s calcium carbonate is mainly used in papermaking, plastics, paint coatings, rubber, wire and cable, feed, carpets, ceramics and other fields. In 2011, the total calcium carbonate consumption in the world was close to 74 million tons, of which about 60 million tons of heavy calcium carbonate, accounting for 81% of the total consumption, of which nearly 1/2 were consumed in Asia, China accounted for about 20%. It is estimated that by 2019, the total output value of the global calcium carbonate market is expected to reach US$25.01 billion.
Calcium carbonate is widely used in the filling of polyvinyl chloride (PVC), polyethylene (PEA, polypropylene (PP) and other resins, in the plastic processing can reduce the shrinkage of the resin, control the degree of openness, but also improve the size of plastic products Stability, improving the processing performance of plastics, improving the heat resistance of plastic products, and reducing the cost of plastic products.
The plastics industry is the largest consumer of calcium carbonate in China. In 2015, the output of plastic products in China was 76.91 million tons, and the consumption of heavy calcium carbonate was 9.99 million tons.
Calcium carbonate, as a filler for papermaking, has high opacity and gloss, and has a uniform particle size and strong color retention. It can replace the previous talc and kaolin, greatly reducing the cost of paper production and consuming carbonate per ton of paper. About 220kg of calcium.
In 2015, the output of Chinese machine-made paper and board was 117.74 million tons, and the consumption of calcium carbonate was 25.9 million tons.
Calcium carbonate acts as a filler in the coating as a filler. It mainly replaces TiO2 and other pigments in the coating, which can greatly reduce the cost of the coating. It is the main constitutional color and can enhance the deposition and permeability of the primer on the surface of the substrate. , To improve the water resistance and mechanical strength of the coating, and to improve the chemical resistance, gloss, brightness, color and other properties of the coating. The amount of heavy calcium carbonate in the coating is about 27%.
In 2015, Chinese paint production was 17.17 million tons and calcium carbonate consumption was 4.63 million tons.
(4) Rubber field
Calcium carbonate, as one of the earliest and most used fillers in the rubber industry, is filled in large quantities in rubber products, which can not only increase the volume of products, but also save expensive natural rubber or synthetic rubber, thereby achieving cost reduction. Calcium carbonate accounts for about 1/4 of the total amount of inorganic non-metallic fillers in current rubber products, second only to clay, and its consumption accounts for about 27% of inorganic mineral fillers. In 2014, China produced 5.32 million tons of synthetic rubber.
Compared with developed countries, the current application of heavy calcium carbonate in China is mainly primary products, and the real value of heavy calcium carbonate applications is its deep-processed products. At present, the production and application of high-end superfine heavy calcium carbonate in the world are mainly concentrated in the United States, Western Europe, and Japan, while Chinese heavy calcium carbonate products are surplus and there are few high value-added products, which cannot meet the needs of the world market and the high-end market in China. , resulting in a large number of high-priced imports of ultrafine heavy calcium carbonate products. It is not difficult to speculate that ultrafine heavy calcium carbonate will be the largest demand for the calcium carbonate industry in the future.
Guilin Hengda Mining Machinery Co., Ltd is a Chinese professional Raymond mill and Ultrafine mill manufacturer. The grinding mills are applied to grind non-metallic minerals such as talc, dolomite, calcite, marble, gypsum, feldspar, kaolin, bentonite, calcium carbonate etc。
12th Apr. 2018