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The relationships for the rate of the pyritic wastestone weathering and leaching amount，surface area of the wastestone weathering，oxidant in the weathering system and the acidity of weathering solution were simulated．Jt was found that，on the basis of the logarithmic relationship between releasing amount of sulfur and leaching amount，the weathering rate of sulfide in the pyritic wastestone was changed exponentially with leaching amount．The relationships between the rate and weathering surface area of the wastestone and the rate and oxidant were exponential．It was indicated that there was scarcely relationship between the rate and acidity of the weathering solution．
