Geological Features Lancang River County Sharpening Iron Deposit And Economic Evaluation

In recent years, especially since entering the21st century, with the rapid development of economy in our country, commodity production and consumption have become the world’s highest.According to statistics,in2011,our country’s consumption of steel has gone more than600million tons, nearly half the word’s. However,based on geological prospecting and research ore forming demonstrates that,the resource of iron ore is scarce in our country,and it is characterized by extensive distribution,all types of deposit,larger lean ore,little mine with rich grade,complicated ore type,associated elements are rich. All the genetic types of iron ore have been found in our country as well as have been found in worldwide.The most important type of iron ore is the parametamorphic type,it reserve occupies57.8%of all reserves. The parametamorphic type of iron ore with larger scale, low iron,outcroppings or shallow burial,easy to separate,and so on.The iron deposit in Modaohe,Lancang,belongs to parametamorphic type of iron deposit.This essay is going to give a complete analysis and study of the geological feature of the iron deposit in Modaohe,Lancang.Applay the theory and methods of geological statistic and mathematical geology, We will use Surpac to build a visional3D model for Modaohe iron deposit in Lancang,and make economical evaluation to this mining resource. The detailed work content includes:(1) The iron ores in Modaohe of Lancang County occurrences in Lancang group of Proterozoic’s metamorphic rock,, the ore bodies occur in bedded,stratoid and lentoid forms. Fe-minerals are hematite, Limonite and magnetite etc. Gangue mineral is primarily quartz, sericite and chlorite. The iron deposit in Modaohe,Lancang,belongs to sedimentary metamorphic type of iron deposit.(2) Established Mo Lancang River iron deposit in the original database, carried out the drill in three-dimensional space position, display and dynamic management of the original information.(3) The collected sample statistical analysis of laboratory data was combined and. After logarithmic transformation, the TFe and Mn elements obeying normal distribution, and is a grade distribution is uniform deposit.(4)The entity model and grade of ore deposit models were developed.(5)Using ordinary pricing method for grade of the deposit value, establish a variety of properties, and according to the tastes of different color models.(6)Implements to query any block grade, as well as features such as automatically reserves the report.(7) Estimated ore resources in different grade, work out the breakeven grade of TFe is32.73%,optimizing cut-off grade of TFe is19.6%,realize to draw the limit of ore body by the dynamic multi-plans and economic evaluated the ore body more than454million RMB yuan in profit...