TON YEAR CHEMICAL Focus on chemical alumina

the gap between Chinese alumina and foreign alumina

Chemical alumina is various, according to nonferrous metal industry standard YS/ ton 619-2007 “chemical alumina type and brand name”, according to the chemical composition of chemical alumina is divided into 5 categories: aluminum hydroxide series, special aluminum oxide series, quasi thin alumina series, zeolite series and calcium aluminate cement series.

Now, polyaluminium chloride, sodium silicate, fluoride salt and other aluminum salts, sodium aluminate, gallium and gallium compounds, part of alumina ceramics and corundum refractories are also included in the category of chemical alumina.

In 1910, Alcoa produced and sold the first batch of calcined alumina in the world, which was the raw material for the production of white corundum abrasives.

Chemical alumina is characterized by a variety of products, high added value, high technical content, wide and expanding application fields, relatively stable price, environmentally friendly, therefore, has become a very important branch of the aluminum industry.

Many countries in the world have invested heavily in the development of chemical alumina industry. Alcoa used to be the world’s largest chemical alumina producer, with 24 production enterprises, covering all the major countries and regions in the world, producing more than 220 varieties and more than 1000k tons /a.Then in 2007 the chemical alumina plate transferred to the Netherlands anmai company.

Japan is the world’s superpower chemical alumina production, consumption, output of about 1000 k, 2012 tons, and continued to slowly rise, variety is the world’s most, Japan does not producing metallurgical grade alumina, but has realized the scale in the chemical production of alumina, seriation, high science and technology, environmental protection and cost rationalization, product except to meet domestic demand, exports reached 25%.More than 85% of Japan’s chemical alumina production is produced by sumitomo chemical industry, showa denko and Japan light metals.

Around 1940, the United States, Japan and Europe on chemical alumina research on a large scale, to the 1970s, in some industrial developed countries in foreign countries have been a great development.

According to the statistics of the international aluminum industry association, in 1975, the total output of alumina in western countries is about 20344k tons, chemical alumina production of 1699k tons, accounting for 8.3% of the total output;In 2000, the total global alumina output was about 51200k tons, while the chemical alumina output was 4800k tons, accounting for 9.4% of the total output.In 2008, the global output of metallurgical grade alumina was 60496k tons and chemical alumina was 4638k tons, accounting for 7.12% of the total output.In 2012, the total output of alumina in the world was 95,705k tons, and the output of chemical alumina was 85,80k tons, accounting for 9% of the total output.From 2008 to 2012, the average annual growth rate of the world chemical alumina was 16.6%, about 11 percentage points higher than the average annual growth rate of primary aluminum.

China’s chemical alumina industry started relatively late. Around 1961, in order to solve the shortage of raw materials in the electronics industry, shandong aluminum plant (now known as shandong aluminum industry co., LTD.) first developed low-sodium alumina and began the research, development and production of chemical alumina in China.

In the 1970 s, in order to satisfy the petroleum, chemical, refractories, ceramics, pharmaceuticals, environmental protection, weapons, aerospace and other industries the demand for chemicals alumina, shandong aluminum plant, zhengzhou light metal research institute and has development and production of the activated alumina, alumina arsenic fluoride removal agent, low iron aluminum hydroxide, high purity alumina, ceramics with alpha Al2O3, spraying with alumina and other 24 kinds of new products.

In the 1980s, China’s chemical alumina production entered a period of rapid development, and new products kept emerging. Represented by zhengzhou light metal research institute, shandong aluminum industry co., ltd. and China Great Wall aluminum industry co., ltd. about 60 special alumina production lines were built.In a number of large alumina enterprises in the surrounding areas have built a batch of chemical alumina production of private enterprises, they use domestic or imported raw materials to produce a variety of chemical alumina.

China is a large alumina production country, using more production technology than any other country, it is easy to realize the branch line of chemical alumina production by grafting in the technological process, especially aluminum hydroxide produced by sintering process, which has a high natural whiteness.

After more than 50 years of development, China’s chemical alumina industry has a considerable influence in the domestic and foreign markets, aluminum hydroxide fillers and other products are also well known in the international market.

However, compared with the United States, Germany, Japan, China’s chemical alumina regardless of product quality, varieties, production scale have a large gap, the fundamental reason is relatively backward in production technology and equipment, production and application of the basic theoretical research is not enough, weak innovation capacity, market development is not enough.

Post time: Mar-02-2020
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