Technology and equipment for preparing cold-bound pellets by using electric furnace ash
An electric furnace and process technology, which is applied in the field of electric furnace ash preparation cold solidified ball technology and equipment, can solve the problems of insufficient recycling and utilization of valuable metals in dust removal ash, environmental hazards, waste of metal resources, etc., to achieve less equipment, environmental protection, low cost effect
Pending Publication Date: 2019-11-19
SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC
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Problems solved by technology
Using the above-mentioned treatment method, the valuable metals in the dedusting ash are not fully recycled, which wastes metal resources and causes harm to the environment
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[0040] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention provides a technology and equipment for preparing cold-bound pellets by using electric furnace ash, and belongs to the technical field of utilization of metallurgical solid waste resources. The preparation technology comprises the following steps that A, the electric furnace ash, steel slag magnetic separation powder and scales are mixed so as to prepare a composition a, wherein thegrade of iron in the composition a is not less than 60%; B, the composition a, a binder and water are mixed so as to form a composition b; and C, pelletizing is carried out by utilizing the composition b. The preparation equipment comprises a proportioning mechanism, a mixing mechanism and a pelletizing mechanism, wherein the proportioning mechanism is used for mixing the electric furnace ash, thesteel slag magnetic separation powder and the scales so as to prepare the composition a, the mixing mechanism is used for receiving the composition a discharged by the proportioning mechanism and enabling the composition a, the binder and the water to be mixed so as to form the composition b, and the pelletizing mechanism is used for receiving the composition b discharged by the mixing mechanismand pelletizing the composition b. According to the technology and the equipment, the effective treatment of the electric furnace ash is realized, the cold-bound pellets are produced, the electric furnace ash is reused, so that resources are effectively recycled, and the environment is protected.
Description
technical field [0001] The invention relates to the technical field of utilization of metallurgical solid waste resources, in particular to a process and equipment for preparing cold-set pellets from electric furnace ash. Background technique [0002] Electric furnace ash is obtained when the electric furnace fume is collected through the collector, the flue, and finally the bag filter during the electric furnace steelmaking. It accounts for about 1% to 2% of the charging amount of the electric arc furnace steelmaking output. Electric furnace ash contains 40% to 50% iron and other metal elements. [0003] Efficient recovery and utilization of iron and other effective elements in the dust removal ash to realize the recycling of resources is undoubtedly an important part of the development of circular economy in the iron and steel industry. [0004] At present, the treatment methods of electric furnace dust removal can be divided into: fire method, wet method, combination of...
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IPC IPC(8): C22B1/248C22B1/244
CPCC22B1/2406C22B1/248C22B1/244Y02P10/20
Inventor 张国柱王永陈博
Owner SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC