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Name of the report: Feasibility test report on the selection of smelting in a vanadium mine in Chun'an County, Guizhou Province
Report format: word
Completion time: July 2007
Publisher: Guo Changqing
Guidance expert: Huang Kaiguo Gong Meiling
Project Leader: Liying Sheng Li tin can
Report Pages: Foreword starting with 31 pages
Introduction to the report:
Foreword
Entrusted by XXX, Xi'an Tianzhou Mining Technology Development Co., Ltd. conducted a feasibility study on the smelting of the XXX vanadium mine in Chun'an County, Guizhou Province from April 30 to June 30, 2007, with the aim of Provide basis for development and utilization.
The vanadium ore deposit in black rock series in carbonaceous chert, siliceous mud carbonaceous slate, carbonaceous shale, etc., independent mineral rare for post more intense hydrothermal activity silicide filling and replacement product.
According to the ore properties of the carbonaceous (commonly known as stone coal type) vanadium ore in the region, the experimental research on the multi-solution smelting process, namely direct ore leaching, alkali leaching, acid leaching of raw ore; direct roasting of raw ore, alkali leaching, acid leaching Raw ore calcium method roasting alkali leaching, acid leaching. The process of extracting vanadium pentoxide (V 2 O 5 ) by calcium calcination-acid leaching-ammonium salt vanadium is finally determined. The final indicator of the process is:
The conversion conversion rate of vanadium is: 65%;
The conversion rate is 78.72%;
The total recovery of V 2 O 5 was 71%;
Refined vanadium contains V 2 O 5 ≥98.2%.
The process of extracting vanadium pentoxide (V 2 O 5 ) by calcium calcination is advanced, reliable and reasonable in cost. No toxic gas is produced during the roasting process. No harmful substances are added during leaching and subsequent production, so no harmful substances are produced. Known as the “cleaning process for vanadium extractionâ€, it is conducive to environmental protection. Therefore, the process is a reasonable process for extracting vanadium pentoxide from the vanadium ore. [next]
Test conclusions and recommendations
1. Conclusion
1 The test results show that the vanadium ore is calcined by acid oxidation-acid leaching process, which is technically feasible, and the vanadium pentoxide (V 2 O 5 ) has high conversion rate and no pollution to the environment. Fatid vanadium process."
2 In the experimental research process, only the additive calcium oxide (CaO) was added, and the auxiliary additive TZ-3 was not added. The conversion rate was only 46.81%. When the auxiliary additive TZ-3 was added, the conversion rate was significantly improved to 70.07%, which was increased by 23.26%, which is also a technical breakthrough point for calcium extraction by vanadium.
3 The results of this test; the recommended extraction of vanadium pentoxide (V 2 O 5 ) calcium calcination-acid leaching process, advanced technology, reliable process, reasonable cost of each process. The vanadium extraction process by roasting acid leaching does not produce harmful and toxic gases, which is beneficial to environmental protection and meets the national green environmental protection requirements.
4 The original vanadium ore was tested by calcium calcination process, the roasting leaching rate was 78.72%, the leaching slag contained V 2 O 5 0.485%, the total recovery of V 2 O 5 was 71%, and the refined vanadium contained V 2 O 5 ≥98.2 %.
5 The industrial wastewater generated in the production is recycled through the return process and partially neutralized by lime. The treated wastewater meets the national industrial wastewater discharge standard, and the specific radioactivity of the tailings meets the requirements of the national radioactive protection regulations, and can be stacked or used as raw materials for building materials.
6 Using calcium calcination-acid leaching process to extract vanadium from stone coal , showing obvious advantages in terms of total recovery rate, production cost, environmental protection, process simplification, etc., for the development and utilization of China's stone coal vanadium ore resources, A new technology path.
2 , suggestion
The data of the test research report is the result of the feasibility test conducted by the laboratory. It can be used as a reference for the design of the XXX vanadium ore smelting process in Chun'an County, Guizhou Province. It is recommended to conduct semi-industrial expansion test before designing the plant.
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