Method for searching for deeply-buried solid sylvite ore deposit

Abstract

The invention provides a method for searching for a deeply-buried solid sylvite ore deposit and belongs to the mineral exploitation technology. The method includes the steps that firstly, the exploration drilling positions are arranged, wherein an anticline structure is found in a predicted sylvite ore deposit exploratory area, the highest point and the second high point are determined in the axial direction of the anticline structure, and the positions of drilling holes are arranged; secondly, drilling and sampling are conducted, wherein ore samples are acquired after drilling operation and drilling liquid does not contain potassium ions; thirdly, judgment is conducted, wherein ore samples acquired after drilling are observed, whether a lode containing potassium is found or not and whether a potassium-containing index occurs or not are judged; if an observation result in the third step shows the potassium-containing index, the exploratory area can be drilled continuously; if the observation result does not show the potassium-containing index, drilling operation is stopped, and the first step, the second step and the third step are conducted on another sylvite ore deposit exploratory area, wherein observation of the ore samples acquired after drilling means that drilling mud samples, rock debris samples and / or rock core and dyke samples are observed. By the adoption of the method, ore searching cost can be effectively reduced and the ore searching success rate of concealed potassium ores can be increased.

Description

technical field [0001] The invention relates to mineral development technology, in particular to a method for searching for deep-buried solid potash deposits. Background technique [0002] China is a large agricultural country with a large population. Food production is the foundation of a country. The importance of nitrogen, phosphorus and potassium fertilizers in agricultural production has been valued by national leaders and scientific workers since the founding of the country. Due to the large-scale shortage of potassium in cultivated land in our country, a large amount of potassium fertilizer needs to be imported. Foreign potash fertilizer monopolies have spotted our weakness and manipulated the price of potassium fertilizer at will. From the end of 2007 to 2008, potash fertilizer rose from 200 US dollars / ton to 600 US dollars / ton. It has greatly increased the burden on farmers and directly affected the sustainable development of my country's agriculture and nationa...

AI Technical Summary

Problems solved by technology

Compared with foreign marine potash sedimentary basins, my country's paleo-marine basins are small in scale, have large changes in the later period, and are buried deep - very deep. These have brought technical difficulties to China's search for potassium, and at the same time, drilling costs are very high

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