2007年年初,全国标准砂工作会议在重庆召开,全国各省、自治区、直辖市标准砂经销负责同志60多人参加了会议。国家发改委有关部门领导亲临会议并讲话。据悉,2006年全国销售ISO标准砂22233吨,比上年略有增长,水泥企业用砂比例为0．19,比上年略有下降,这说明新型干法水泥结构比例的提高对标准砂的用量具有一定影响。 At the beginning of 2007, the national standard sand work conference was held in Chongqing. More than 60 responsible comrades of various provinces, autonomous regions and municipalities directly under the Central Government attended the conference. The leaders of relevant departments of the State Development and Reform Commission came to the conference and made speeches. It is reported that in 2006 the national sales of 22,233 tons of ISO standard sand, a slight increase over the previous year, the proportion of cement enterprises sand was 0.19, a slight decrease over the previous year, indicating that the proportion of new dry cement structure increased standard sand The amount has a certain impact.