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今年以来,各粘土矿采取有效措施,使煅烧成品回收率有了较大的提高。一季度平均比去年实际提高5.38％,11个矿山中有8个超过了去年的实际水平。四、五月份又分别比一季度提高0.79％和0.74％。由于煅烧成品回收率的提高,一季度就多产矿石一万七千余吨。五个月来煅烧成品回收率稳步上升的有古冶、洪山、焦作和山耐等矿山。现将各矿的煅烧回收率指标列于下表。
Since this year, all clay mines have taken effective measures to make the recovery rate of calcined products greatly improved. The average increase of 5.38% in real terms in the first quarter from the previous year and 8 out of 11 mines exceeded last year’s actual level. In May and April, they increased 0.79% and 0.74% respectively from the first quarter. As the recovery of calcined products increased, more than 17,000 tons of ore were produced in the first quarter. In the past five months, the recoveries of calcined products have been steadily rising. There are such mines as Guye, Hongshan, Jiaozuo and Shannian. Now the ore calcination recovery indicators are listed in the table below.