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In 2009, the demand for precipitated silica accounted for about 70% of the world's total demand for specialty silicas, and will remain the major demand product type in the next four years. Due to the strong rebound in the rubber market, precipitated silica will also be the fastest growing demand for silica, and it will replace some of the carbon black in the tires, further increasing the usage. The increase in demand for fumed silica was mainly due to a rebound in silicone rubber production. The silica sol is expected to have a good market opportunity in paper coating, and the market share in the semiconductor polishing industry will also increase.
The report also pointed out that rubber is the largest downstream application area of ​​specialty silicas and it is expected that by 2014, this market demand will account for 45% of the total demand. The use of "green" tyres with precipitated silica can reduce rolling resistance and improve the fuel economy of the car, so demand will continue to grow. In addition, the demand for specialty silica in the chemical market will also grow strongly, because more products using silica additives can improve its processability and overall performance.
Before 2014, the average annual growth rate of demand for specialty silica in Asia and the Pacific will be ahead of the rest of the world, reaching 9%. The demand for China's specialty silica will continue to grow in double digits, becoming the world's most demanding country. The demand growth of specialty silica in North America and Western Europe will be lower than the world average, and the market demand growth in other regions will be slightly higher than the world average.
The valve is a pipeline accessory used to open and close the pipeline, control the flow direction, adjust and control the parameters (temperature, pressure and flow) of the transmission medium. According to its functions, it can be divided into shut-off valve, check valve, regulating valve, etc.
The valve is a control component in the fluid delivery system, which has the functions of cut-off, regulation, diversion, prevention of countercurrent, pressure stabilization, diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest globe valves to various valves used in extremely complex automatic control systems.
The valve can be used to control the flow of various fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. The valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard valves, etc.
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