Composite manganese smelting furnace charge preparation process capable of realizing comprehensive utilization of manganese ore

A preparation process and manganese furnace technology are applied in the field of preparation technology of compound manganese smelting charge, which can solve the problems of unsatisfactory sintering strength, poor spheroidization of fine-grained manganese ore powder, affecting the service life of equipment, etc., so as to improve the vertical sintering speed. and utilization coefficient, overcome the poor air permeability of the material layer, and save consumption.

Active Publication Date: 2014-12-31
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conventional sintering of manganese ore powder still has problems such as high solid fuel consumption, unsatisfactory sinter strength and low output, especially the poor sphericity of fine-grained manganese ore powder and lower sintering output; moreover, in the sintering process of manganese ore powder , the temperature of the exhaust gas is too high, which seriously affects the service life of the equipment

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  • Composite manganese smelting furnace charge preparation process capable of realizing comprehensive utilization of manganese ore

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Embodiment 1

[0028] a kind of like figure 1 The compound manganese smelting charge preparation process that can realize the comprehensive utilization of manganese ore of the present invention comprises the following steps:

[0029] 1) Preparation of pellets: mix a fine-grained manganese concentrate (raw ore particle size is -0.074mm 85.3%), binder and fuel with water, and make the mixed mixture A into pellets on the pelletizer Group material; bentonite is selected as the binder, and its dosage is 1.2% of the mass of fine-grained manganese concentrate; coke powder is selected as fuel, and the particle size of coke powder is less than 3mm, and the dosage of coke powder is 2.5% of the mass of fine-grained manganese concentrate ;The water content of the pellets is 9.5%; the pelletizing time is controlled at 13 minutes, the drop strength of the green pellets after pelletizing is 5.6 times / 0.5m, the compressive strength is 12.4N / piece, and the bursting temperature is 385°C;

[0030] 2) Preparat...

Embodiment 2

[0034] A kind of composite manganese smelting charge preparation process that can realize the comprehensive utilization of manganese ore of the present invention comprises the following steps:

[0035]1) Preparation of pellets: mix a fine-grained manganese concentrate (raw ore particle size is -0.074mm 83.5%), binder and fuel with water, and make the mixed mixture A into balls on the pelletizer Agglomerate material; bentonite is selected as the binder, and its dosage is 1.5% of the mass of fine-grained manganese concentrate; coke powder is used as fuel, the particle size of which is less than 3mm, and the dosage of coke powder is 2.5% of the mass of fine-grained manganese concentrate ;The water content of the pellets is 8.5%; the pelletizing time is controlled at 13min, the drop strength of green pellets after pelletizing is 4.8 times / 0.5m, the compressive strength is 11.47N / piece, and the bursting temperature is 415°C;

[0036] 2) Preparation of Mixture B: Separately take fin...

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Abstract

The invention discloses a composite manganese smelting furnace charge preparation process capable of realizing comprehensive utilization of manganese ore. The composite manganese smelting furnace charge preparation process comprises the following steps: mixing fine-fraction manganic concentrate, an adhesive and fuel with water and preparing a mixture A obtained after mixing into a pellet material on a pelletizer; additionally taking manganese ore powder, flux and fuel, adding water to carry out blending and carrying out primary mixing in a mixer to obtain a mixture B; uniformly mixing the prepared pellet material and the mixture B again in the mixer, placing an obtained mixture on a sintering machine after uniform mixing for material distribution, ignition and sintering and after cooling, carrying out crushing and screening to obtain the composite manganese smelting furnace charge that the acid pellet is embedded into high basicity sinter. The process disclosed by the invention is simple, and low in cost, can greatly improve gas permeability of a sintered material layer, improves the utilization level of the fine-fraction manganic concentrate and increases a vertical sintering speed and a utilization coefficient.

Description

technical field [0001] The invention belongs to the field of pretreatment of mineral materials in the field of metallurgy, in particular to a preparation process of composite manganese smelting furnace materials. Background technique [0002] Manganese has a wide range of uses and is an important industrial raw material. In modern society, manganese and its compounds are more and more widely used in metallurgy, chemical industry, light industry, medicine, machinery, national defense, communication, agriculture and other industries. In the iron and steel industry, the amount of manganese used is second only to iron, and 90% of manganese is consumed in the iron and steel industry. Since manganese has a relatively high affinity with oxygen and sulfur, manganese is a deoxidizer and desulfurizer in the steelmaking process; manganese can Strengthen ferrite and refine pearlite, so it can improve the strength and hardenability of steel, so it is also one of the good alloying elemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
Inventor 王文娟赵强宁顺明佘宗华封志敏邢学永万洪强吴江华
Owner CHANGSHA RES INST OF MINING & METALLURGY
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