Japan learned that most of the domestic production of micro-silica fume and the manufacturers of the two mixed up the concept, only the literal meaning of the two is seen as a product. In fact, the micro-and silica fume have a lot of difference, it is precisely because the two concepts is not clear to the Chinese silica fume and micro-market confusion, leading to a lot of mistakes in trade negotiations, the market price of micro-silica fume Much lower than the international market, but also to China and micro-silica fume the market's international reputation has brought a greater negative impact.
With the foreign micro-silica fume and the deepening of understanding, and micro-silica fume is widely used, its advantages and a wide range of commercial space market, highlighted by gradually. As soon as possible in order to distinguish the relationship between the two, to clarify the confusion in the market, reduce the loss of silicon on-line industry (www.windosi.com) staff through in-depth understanding, both from the appearance, performance, production processes, use , The target market and so the status quo has done a specific analysis.
One. Silica fume and micro-market status quo
At present, there is only China, the United States, Germany, a small number of countries have the production capacity of Silica, Silica China's domestic market is mainly concentrated in Fengyang, Anhui, Zhejiang Huzhou, Lianyungang, Jiangsu and other places, relatively speaking, the export volume Smaller, more exports of South Korea and Japan, domestic production of large enterprises Silica ina high-tech Co., Ltd. in Anhui Province and East China Sea Silica plant, the monthly output of 1,000 tons in all over. The solar energy industry and speed up the silica powder to the rapid growth in market demand, showing a shortage of silicon. According to statistics, domestic production of solar manufacturers Silica Media Converter with up to 170, of which Shanghai accounted for about 40, Silica in China have great potential and market demand.
The micro-silica fume on the market abroad, foreign study of micro-silica fume have been for decades, the systematic study of micro-silica fume, a number of countries set up the appropriate research institutions, set up a production plant, the United States Kinzua in 1983 to repair a dam stilling basin project on the use of micro-silica fume concrete to save tens of millions of dollars. The micro-silica fume in China belong to one China has extensive industrial by-products, most of the industrial production of silicon for every 3 tons of recyclable industrial silicon micro-silica fume tonnage 1. Before most of the silica fume micro-enterprises have not paid enough attention to recovery, a number of large-scale return of the micro-enterprise recovery silica fume, just piled up on one side, which did not find the value and effectiveness, and come back recovery of these micro-silicon Most of silicon powder content is not standard, the quality of its domestic enterprises, most dare not easily buy these products, China's micro-silica fume market also showed a disorderly state, the market remains to be developed. In foreign countries in the use of micro-silica fume have access to the huge economic benefits. Aiken, such as Norway, every year from China at low prices to buy a large number of micro-silica fume, iron alloy, such as the Northwest most of the iron alloy factory of the micro-silica fume every year, Aiken has been acquired, processed in China for the domestic selling prices of construction , Cement, fertilizer and other areas in which profit is very expensive, Aiken's annual sales of micro-silica fume up to 250,000 tons, called a micro-industry, absolutely fume leader. The specialized domestic micro-silica fume do very little business, large or production in the northwest region of a few large ferroalloy enterprises, environmental protection equipment standard, and come back recovery of micro-silica fume silica content is relatively high, while the Shanghai-day limited-fume Is a micro-silica fume is the home of their own brands, has been in a certain industry.
Micro-silica fume domestic market has not yet fully developed, so there are a lot of room for the market. However, micro-silica fume resources is also limited, with the country's efforts to strengthen environmental protection in the imposition of iron alloy of silicon and silicon manufacturers to install environmental protection equipment for dust suppression at the same time of high energy-consuming industries over the development of policies, the micro-silica fume Resources will become more and more rich. As a result, in the face of the business related to the cancellation of preferential policies, should take the initiative to find as a result of recovery of micro-silica fume and dust from the market. However, the impact of micro-silica fume is now the main reason the price is still on the recovery of the cost of equipment, power loss, as well as its physical properties brought about by the choice of packaging, is encrypted and transportation costs. Micro-silica fume-depth research, development and utilization of China's industrial smoke and dust about the recovery of the environmental protection industry in the future. In short, the strengthening of micro-silica fume recycling awareness at the same time, businesses should also be more motivated to look for business opportunities, and enhance the whole micro-silica fume make warming vitality to the market.
二. Silica fume and micro-production process differences
Silica is a natural quartz (SiO2) or fused silica (natural quartz to high temperatures, melting, cooling the amorphous SiO2) as broken, the ball milling (or vibration, wind mill), flotation, acid purification, and other high-purity water treatment Road-processing technology from the powder.
Also known as micro-silica fume silica fume silica fume, or cohesion, was also called silica fume. Ferroalloy smelter is in the ferrosilicon and silicon metal (metal silicon), Ore-furnace heat produced a large number of highly volatile Si and SiO2 gas, gas emissions and air after the rapid oxidation of condensate from precipitation. It is the largest smelter in the industrial by-products, dust with the whole process would take environmental protection equipment for recycling, as compared with the quality of light needed to use encryption devices to encrypt.
In the actual transaction process, many manufacturers have as a micro-silica fume, but the two essentially different, so in the course of transactions tend to have a bias, making manufacturers to provide products and indicators of demand-side indicators of the existence of parameters Very different.
三. Silica fume and micro-appearance of the differences
From the appearance of speaking with micro-silica fume is also relatively easy to distinguish between basic and quality of its pure silica powder, white color, balance of particles, is a non-toxic, tasteless, non-polluting inorganic non-metallic materials; silica based on raw materials, reducing agent Or different Furnace status of the vast majority of micro-silica fume was dark gray or gray. In the process of formation, as a result of the transformation process by the surface tension of the role of the formation of the amorphous phase amorphous spherical particles round, and a more smooth surface, while others are more than a ball of the particles stick together aggregate. Micro-rare white silica fume, the absence of a suitable market position, the Shanghai-day specialty materials company has launched a white micro-silica fume, the successful application of compound fertilizers, pesticides (as adsorbent, or the production of silicon), paint, paint ( As a thickening agent, the agent of anti-Shen), rubber (as a reinforcing agent), plastics (as filler), special ceramics can be alternatives silica, but the number is relatively limited.
四. Silica fume and micro-performance and use the difference
From the micro-and silica fume on the role of silicon or performance on-line industry is so divided: Silica general said possess good temperature, acid corrosion, poor thermal conductivity, high insulation, low inflation, stability of the chemical properties, hardness, etc. Excellent performance. Silica, in accordance with its purposes is divided into the following categories: ordinary silica, silica-level electrical, electronic-class family of Silica, Silica fused silica, quartz ultra-fine silica powder,. Silica Nano. Silica various specific purposes are as follows:
1. Silica pass, mainly used for epoxy resin casting material, potting materials, welding electrode layer of protection, metal, ceramics, silicone rubber, paint and other chemical industries.
2. Silica-class electrician, mainly for general-purpose electrical insulation pieces of casting, high-voltage electrical insulation pouring, APG injection process expected, the epoxy potting material, such as high-grade ceramic glaze.
3. Silica-class electronics, mainly used for integrated circuits, electronic components and materials for plastic packaging materials.
4. Fused silica powder, fused silica powder (WG) is the raw material used by the natural quartz to high temperatures, melting, cooling the amorphous SiO2, by the multi-channel processing technology from the powder. The product is of high purity, with a coefficient of thermal expansion of small, low-stress, high humidity, low-level radioactive, and other fine features. For the ultra-large-scale and large-scale integrated circuits using plastic material, epoxy casting material, potting compound, and other chemicals in the area.
5. Ultra-fine silica powders, primarily for use in coatings, paints, plastics, adhesives, rubber-gyu, senior Casting ceramic.
6. Nano-SiOx, nano-materials, nano-SiOx as an important, mainly used in electronic packaging materials, polymer composites, plastics, paints, rubber, paint, ceramics, adhesives, glass and steel, the drug carrier, cosmetics and anti-bacterial materials in areas such as Has become a traditional product upgrading to file a new type of material.
