The earliest work on Jiajiawa mining area began at 196 1. At that time, Yu 02 team of Henan Geological Bureau made a preliminary understanding of the bauxite mine by drilling 7 holes and 5 shallow wells for the purpose of finding bauxite. Subsequently, during the exploration of Permian large coal by the Central South Coalfield Geological Bureau 127 team, 24 boreholes passed through the bauxite layer, and 16 boreholes were sampled and tested. However, the sampling method does not meet the requirements, and the detection items are incomplete, so we can only refer to it. During the period of 1967- 1970, the 60 1 team of zhongnan metallurgical geological exploration company entered Jiajiawa mining area, drew a geological sketch with the scale of 1∶5000, and conducted a general survey in the east of the mining area. These three tasks belong to the investigation and understanding stage of bauxite in this area. Although there are not many works, the quality is still problematic. However, after three missions to 1970, 60 1 team, it is concluded that the average aluminum-silicon ratio of bauxite in this area is more than 7, and there may be more than150,000 tons of reserves, which provides a geological basis for further systematic investigation and exploration.
1in March, 1980, Geological Team 6 of Henan Metallurgical Geological Exploration Company entered Jiajiawa mining area to carry out general survey and evaluation, which basically ended at the end of 198 1 year. The work has proved that the mining area is a large bauxite-rich deposit.
Jiajiawa area has been used as bauxite until 198 1. Moreover, the general survey and evaluation have been basically completed, and the scale and quality of the deposit are generally clear. Just at this time, Mianchi began to build a high bauxite calcining plant. The re-understanding of geological data shows that the eastern Jiajiawa deposit will have greater economic value if it is used as high-alumina refractory clay. Therefore, the Metallurgical Industry Department of Henan Province decided to explore the eastern part of Jiajiawa with high Al-Si ratio as high Al clay mine and the western part of Jiajiawa as bauxite mine. No.6 Team of Metallurgical Geology began to explore the eastern part of Jiajiawa in early 1982, and completed the exploration report at the end of August 1983, and proved the reserves of high-alumina clay ore of 8.34 million tons. Industrial reserve accounted for 59%. In addition, the proven bauxite reserves are 4.86 million tons (the ratio of aluminum to silicon is 6.4). The exploration of high-quality high-alumina refractory clay in eastern Jiajiawa provides a good raw material base for Mianchi bauxite calcining plant.