Comprehensive utilization method for low-grade complex ferromanganese ore
A low-grade iron-manganese ore technology, applied in the field of comprehensive utilization of low-grade complex iron-manganese ore, can solve problems such as the inability to obtain economically valuable products, and the quality of sintered ore cannot meet the requirements of blast furnaces, so as to achieve value improvement and simple operation , the effect of fewer processes
Active Publication Date: 2016-02-03
CENT SOUTH UNIV
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Problems solved by technology
[0005] In view of the existing problems in the processing of low-grade complex ferromanganese ore, that is, economically valuable products cannot be obtained from ore dressing, and the quality of sintered ore obtained by direct sintering cannot meet the requirements of blast furnaces
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Embodiment 1
[0017] Embodiment 1: For raw ore powder, when the magnetic field intensity is 1.1T~1.3T, the productive rate of concentrate is more than 88%, the recovery rate of Fe is more than 90%, the recovery rate of Mn is more than 85%, and the recovery rate of Pb is more than 88%. The recovery rate is above 65%, and the recovery rate of Zn is above 76%.
Embodiment 2
[0018] Example 2: Under the condition that the dosage of compound xanthate is 300-600g / t and the dosage of No. 2 oil is 0.03ml-0.04ml / t, the yield of concentrate is 23.87%, the recovery rate of Fe is 22.60%, and the recovery rate of Mn The recovery rate of Pb was 27.35%, the recovery rate of Pb was 83.52%, and the recovery rate of Zn was 69.08%.
Embodiment 3
[0019] Example 3: When the water content of the mixture is about 9%, and the fuel ratio is about 5.5%, the utilization coefficient of the sintering cup is 0.765t / m 2 h, the yield rate is 64.26%, and the drum strength is 63.33%.
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The invention discloses a comprehensive utilization method for low-grade complex ferromanganese ore. The comprehensive utilization method comprises the steps that raw ore is crushed to a certain particle size, and magnetic separation is conducted through a high-gradient magnetic separator; valuable elements such as Pb and Zn in tailings are recycled through flotation; sintering is conducted after flotation concentrate and magnetic concentrate are mixed uniformly; the sintered ore enters a blast furnace for smelting; and in the blast furnace smelting process, Pb deposits at the bottom of the blast furnace as liquid phases, Pb and molten iron are separated and recycled, Zn is enriched in blast furnace dust, Fe enters the next working procedure as molten iron, and Mn enters the slag phase and forms manganese-rich slag. In this way, various valuable elements in the complex refractory ferromanganese ore are utilized sufficiently. The method is easy to implement and reliable, energy consumption is low, various valuable elements in the raw ore can be recycled, and accordingly the economic benefits of mineral products are greatly increased. By means of the comprehensive utilization method, a feasible method and a reliable theoretical foundation are provided for the development and utilization of the low-grade ferromanganese ore.
Description
technical field [0001] The invention belongs to the field of comprehensive recovery and utilization of ores, and relates to a method for comprehensive utilization of low-grade complex iron-manganese ore. Background technique [0002] Iron and manganese are important elements in steelmaking. Among them, manganese, as an alloying element, can greatly increase the hardness of steel, increase strength, and enhance wear resistance. important for steel production. With the development of the economy, the demand for high-quality manganese alloy steel is increasing. [0003] At present, there are a large number of low-grade complex iron-manganese ores in my country that cannot be utilized. This type of ore has the characteristics of low grades of Fe and Mn elements, complex ore properties, and difficult separation. If it cannot be developed and utilized, it will cause waste of resources. The invention relates to a comprehensive utilization method of low-grade complex ferromangane...
Claims
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IPC IPC(8): C22B1/16C22B19/20C22B13/00C21B5/00B02C21/00B02C23/14B03C1/00B03D1/00
CPCY02P10/20
Inventor 李骞杨永斌徐斌姜涛赵世印吕鹏纪方舟张雁李光辉郭宇峰范晓慧陈许玲张元波彭志伟甘敏
Owner CENT SOUTH UNIV
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