Vanadium tailings large-scale utilization and production method
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A technology for extracting vanadium tailings and production methods, applied in furnaces, blast furnace details, blast furnaces, etc., can solve problems such as difficult production lines, and achieve the effects of increasing sintering yield, increasing accuracy, and improving mineral phase structure
Active Publication Date: 2015-06-10
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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[0005] Through the above research, although the vanadium extraction tailings can be partially utilized, it is difficult to form a continuous production line for large-scale utilization of the vanadium extraction tailings
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Embodiment 1
[0039] 63.4% Baima concentrate, 11% mixed powder, 6.1% medium powder and 5% vanadium extraction tailings are used as iron-containing raw materials, the amount of gas ash is 3%, the amount of limestone is 6.7%, the amount of active ash is 4%, coke powder The dosage is 3%, the dosage of anthracite is 1.8%, the alkalinity of the mixture is 1.85, and the external sinter is 26%, then mixed and granulated to obtain the mixture, which is distributed on the belt sintering machine, ignited and sintered to obtain the finished sinter . The obtained vertical sintering speed is 17.25mm / min, the utilization coefficient is 1.43t / (m2·h1), the yield is 83.15%, and the drum index is 57.73%.
Embodiment 2
[0041]With 63.1% Baima concentrate, 11.5% mixed powder, 5.7% medium powder and 6.5% vanadium extraction tailings as iron-containing raw materials, the amount of gas ash is 3%, the amount of limestone is 6.6%, the amount of active ash is 4%, coke powder The dosage is 3%, the dosage of anthracite is 1.8%, the alkalinity of the mixture is 1.85, and the external sinter is 24.8%, then mixed and granulated to obtain the mixture, which is distributed on the belt sintering machine, ignited and sintered to obtain the finished sinter . The obtained vertical sintering speed is 17.66mm / min, the utilization coefficient is 1.45t / (m2·h1), the yield is 83.55%, and the drum index is 57.27%.
Embodiment 3
[0043] 62.7% Baima concentrate, 12% mixed powder, 5.3% medium powder and 8.5% vanadium extraction tailings are used as iron-containing raw materials, the amount of gas ash is 3%, the amount of limestone is 6.5%, the amount of active ash is 4%, coke powder The dosage is 3%, the dosage of anthracite is 1.8%, the alkalinity of the mixture is 1.85, and the external sinter is 23.2%, and then mixed and granulated to obtain the mixture, which is distributed on the belt sintering machine, ignited and sintered to obtain the finished sinter . The obtained vertical sintering speed is 18.95mm / min, the utilization coefficient is 1.59t / (m2·h1), the yield is 84.47%, and the drum index is 56.93%.
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Abstract
The invention discloses a vanadium tailings large-scale utilization and production method. The method includes the following steps that a, sintering raw materials are prepared; b, material mixing is conducted, wherein the prepared sintering raw materials are evenly mixed; c, pelletizing is conducted; d, the mixed sintering raw materials are distributed on a sintering pallet to be ignited and sintered, and sintered ores are made; e, a CaC12 solution is sprayed on the produced finished sintered ores through a spray system; f, the finished sintered ores are transported into a blast furnace to be smelt. Compared with an existing method, by means of the method, a low-melting-point sintering phase can be formed in the sintering process, the sintered ore phase structure is improved, the sinter product ratio is increased, the problems that it is difficult to conduct discharging, and discharging is uneven due to the fact that vanadium tailings are small in bulk specific weight and large in moisture can be effectively solved, the sintering material mixing accuracy is improved, the harmful element sulphur in the vanadium tailings can be removed in the sintering process, and secondary solid waste resource circulating and recycling are guaranteed. The problem of environmental pollution brought by long-time stacking of the vanadium tailings is further solved.
Description
technical field [0001] The invention relates to a resource utilization technology of solid waste in the metallurgical industry, in particular to a production method for large-scale utilization of vanadium extraction tailings. Background technique [0002] Vanadium-titanium magnetite is a multi-element symbiotic iron ore mainly composed of iron, vanadium and titanium, accompanied by various valuable elements (such as chromium, cobalt, nickel, copper, scandium, gallium and platinum group elements, etc.). Due to the close symbiosis of iron and titanium, vanadium occurs in the form of isomorphism with titanomagnetite, which is usually called vanadium titanomagnetite. There are abundant vanadium-titanium magnetite resources in the Panxi area of Sichuan Province in my country, with a total reserve of more than 10 billion tons. The Panxi area is also called high-titanium vanadium-titanium magnetite because the titanium content in the iron concentrate is as high as 10% to 12%. iro...
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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/22C22B1/24C21B5/00
Inventor 胡鹏饶家庭林文康付卫国习鹏谢洪恩唐文博王禹键蒋胜
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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