Sintering method with part of return mine being sintered without pelletization being pelletized

A sintering method and unmanufactured technology, applied in the field of iron ore powder sintering, can solve the problems of poor granulation effect, granulation damage, unfavorable sintering material layer permeability, etc. The effect of improving the granulation effect
CN103757202AActive Publication Date: 2014-04-30SHOUGANG CORPORATION +1
9 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHOUGANG CORPORATION
Publication Date
2014-04-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a sintering method with a part of return mine being sintered without being pelletized. The method comprises the following steps: batching; material mixing; secondary mixing for pelletization; material distributing; igniting; sintering; crushing and cooling; screening; index detecting for agglomerate. The sintering raw materials prepared in step of batching comprise the following materials: 40-80% of hematite, 5-50% of return mine, 0-10% of quicklime, 0-10% of dolomite, 0-10% of limestone and 3-8% of coke powder; before the step of material mixing, 3-50% of the return mine is taken out, and directly added in the sintering raw materials after the secondary mixing for pelletization without participating in the steps of material mixing and the secondary mixing for pelletization. The method can improve pelletization effect and sintering air permeability, and utilization coefficient of sintering.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of iron ore powder sintering, in particular to a sintering method in which part of the ore is returned to sintering without granulation. Background technique

[0002] Return ore is the sintering process, iron ore powder, flux, coke powder and other materials are agglomerated at high temperature to form sintering ore, and the sintering ore is produced after cooling, crushing, transfer, screening and other processes. The particle size of the returned ore is less than 5mm or 6.3mm; after the sintered ore is under the sieve of the blast furnace, there is also a part of the returned ore, which is called the blast furnace returned ore. Both the sintering self-returning and the blast furnace returning ore participate in the sintering ingredients for cyclic sintering. The return rate is an important indicator reflecting the overall level of the sintering plant. Reducing the return rate is an important means to inc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More