自产矿与外购矿的结构变化对利润的影响

对黄金企业自产矿与外购矿的结构变化对利润的影响进行了讨论 ,建立了自产矿、外购矿产量—利润关系数学模型 ,当自产矿产量发生变化时 ,为保证目标利润的完成 ,利用数学模型计算出外购矿产量 ,便于企业及时对生产进行调整和安排。

提高包钢6~#高炉入炉自产矿比例的措施

随着自产矿比例的提高,6#高炉炉况顺行周期变短,高炉产量及各项技术经济指标较低。采取改善烧结矿冶金性能、调整高炉基本操作制度、中部调剂等一系列措施,通过2年冶炼实践,自产矿比例大幅度提升、炉况趋于稳定、产量及各项技术指标明显改善。

酒钢周边粉矿与自产粉矿可选性对比试验研究

通过对酒钢自产粉矿与周边粉矿强磁一粗两扫可选性试验对比,分析了酒钢周边粉矿对选矿厂强磁生产过程和指标的影响,试验结果表明:周边矿粉矿相比于自产粉矿原矿TFe品位低4.45%,SiO_(2)、S、K_(2)O分别高5.11%、0.676%、0.409%,同条件磨矿试验周边矿粉矿-200目含量降低16%,周边粉矿铁精矿品位、金属回收率均低于自产粉矿,而精矿中杂质K_(2)O含量远高于自产粉矿,影响强磁选铁精矿质量,主要是周边粉矿磨矿解离度不够造成的。

包钢4150 m^3高炉使用经济炉料操作实践

文章介绍了包钢两座4150 m^3高炉在使用经济炉料的条件下,克服了焦炭热性能差,入炉有害元素含量高、料柱透气性差、初始气流分布难以调剂的难题,通过采取调整送风制度、装料制度等措施,解决了风口曲损问题,延长了高炉顺行周期。

优化原料结构 降低生产和采购成本

1998年,针对钢材价格持续下跌和上游产品价格不断上扬的市场形势,首钢总公司党委及时做出了“深入学邯钢、降成本,开展增收节支”活动,确保全年任务完成的决定,坚持眼睛向内,苦练内功,收到了明显效果。可比产品总成本比上年降低8亿元。

2000年我国铜产量、供应量分析

2000年我国有色金属产量和利税均创历史最好成绩,产量达到752万吨,比原来“九五”初期计划的500万吨增长了50.2%,目前我国有色金属产量已到世界前茅。有色金属在2000年好成绩的取得,主要得力于改革开放政策的实施,企业深化改革速度的加快。

Test of oxidation behavior of sulfide ores at ambient temperature for fire control

The coincidence of relevant factors, e.g. oxygen absorption quantity, weight increment, water soluble iron ions and sulfate ion of sulfide ore samples in the oxidation process, was tested through experiment. Based on a large number of tests for a group sample of sulfide ores from a mine, some important conclusions were obtained. The results obtained by the investigation indicate that there is no general interpretation relative to the oxygen absorption and the formation products of sulfate ion and water soluble iron ions during the oxidation process of sulfide ores at ambient temperature. However, the weight increment of the sulfide ore samples in the oxidation process at ambient temperature has a linear relationship with the auantitv of oxvaen absorption.

The Study on Energy Chemical Industry Clustering in Shaanxi

Shaanxi regions have abundant coal, gas, oil and mineral resources, however, the low efficiency of the energy development and utilization of Shaanxi province, greatly influence the northern Shaanxi energy base to continue the development. For mineral resources property not clear present situation, proposed the resource sharing of the Shaanxi energy base mechanisms, mainly including mineral resources property division, energy and natural resources management enterprise shareholding system of depreciation of the mechanism.