Supplementary detailed investigation of iron ore in Zhangbaozhuang mining area, Wenshang County, Shandong Province

The iron mine in the mining area is located 9 kilometers northeast of Wenshang County and belongs to Yangdian Township of Wenshang County, with an exploration area of 8.36 square kilometers. The mining area belongs to the continental monsoon climate in the north temperate zone, with agriculture as the main economy, good water conservancy and electric power conditions and surplus labor force.

From July 20, 2009 to 12,12, the Fourth Institute of Geology and Mineral Exploration of Shandong Province carried out exploration work, and the exploration mineral was iron ore, with a detailed investigation of the exploration fund of 4 million yuan.

(2) Description of results

Zhangbaozhuang iron deposit is formed by sedimentary metamorphic iron ore. Work * * * delineated 20 ore bodies, of which the original No.2 ore body was supplemented and controlled. The ore-bearing elevation of the ore body is 15 ~ 1800 m, the strike depth is 1866 m, and the dip angle reaches 2250 m. The average mFe grade is 265438 0.25%, and the average true thickness is 365438. The newly discovered ore body is about 500 meters long and 320 meters deep, with an average grade of 2 1.63% and an average true thickness of 17.72 meters. Other ore bodies are smaller in scale. The ore adopts grinding, grading, magnetic separation, fine screening, magnetic separation, grinding and secondary magnetic separation processes. The grade of iron concentrate is TFe63.2 1%, the recovery rate is 73.4 1%, and the processability is average.

* * * The proven (332+333) resources are 654.38+56 million tons, with an average grade of MFE of 20.99% and TFE of 30.82%. Among them, (332) resource is1.1.90 billion tons, with an average grade of 20.79% for MFE and 30.75% for TFE. They are all new resources, and they have all passed the examination.

(3) the brief process of achievement

In July 2009, field work was carried out. According to the previous data and magnetic survey results, the original No.2 ore body was drilled according to the first exploration type, and the C7 anomaly was drilled according to the second exploration type. On February 20 1 1 year, the field work was completed and transferred to indoor finishing. On March 20 12, the supplementary detailed investigation report of iron mine in Zhangbaozhuang mining area, Wenshang County, Shandong Province was submitted.