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Silicon lime are widely distributed, the full range. Silicon lime is an important building materials. Wollastonite resources  is rich in the different areas of the world , total resources estimated at 800 million tons or more, but the distribution is very uneven. More than 20 countries found that wollastonite deposit, Wollastonite is mainly distributed in Asia, China, India, Kazakhstan, Uzbekist

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Development and utilization of iron brass in Finland。 In iron and brass, iron and iron-rich particles precipitated as a nucleation and grain refinement, and to prevent the recrystallization grain growth, thereby improving the mechanical properties and process performance. The iron content in iron brass is usually less than 1.5 percent of their organization (α + β), with high strength and tough

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