Novel environment-friendly blast furnace stemming

A technology of blast furnace clay and blast furnace, which is applied in the field of new environment-friendly blast furnace clay and its preparation. It can solve problems such as high temperature, large flow, and taphole expansion, so as to improve plasticity and activity, change taphole shallowness, and ensure The effect of breathability

Active Publication Date: 2014-10-01
ANHUI SAFE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during long-term use, the taphole will be corroded, and the taphole will be reamed, resulting in shallow taphole, unstable iron flow, unclean iron, or even large flow, which seriously affects the normal production. Iron, a...

Method used

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  • Novel environment-friendly blast furnace stemming

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Effect test

Embodiment 1

[0015] Embodiment 1: a kind of for 1080m 3 The blast furnace clay is characterized in that the blast furnace clay is composed of the following components by weight: used waste clay: 10-20 parts; yttrium mullite: 5-15 parts; coal gangue raw ore: 10-20 parts parts; modified magnesium iron aluminum spinel powder: 10~25 parts; modified clay: 10~20 parts; recycled graphite electrode powder: 10~35 parts; thickener: 8~18 parts, asphalt powder: 3~8 parts parts; Glydol n 2002: 0.2~0.5 parts; additional binder: 14.5 parts, nanocellulose 0.1. Preparation method of gun mud: Put all the raw materials into the mixer and pre-mix for 10 minutes; then add 90% of the total amount of binder, and wet mill for 30 minutes; add the remaining 10% of binder, and then wet mill for 10 minutes ;Sliced ​​by a mud slicer, then through a mud extruder, extruded into a shape, and bagged, which is the finished product; the extruded temperature is set at 65°C.

Embodiment 2

[0016] Embodiment 2: a kind of for 2500m 3 The blast furnace clay is characterized in that the blast furnace clay is composed of the following components by weight: used waste clay: 10-20 parts; yttrium mullite: 5-15 parts; coal gangue raw ore: 10-20 parts parts; modified magnesium iron aluminum spinel powder: 10~25 parts;; modified clay: 10~20 parts; recycled graphite electrode powder: 10~35 parts; thickener: 8~18 parts, asphalt powder: 3~ 8 parts; Glydol n 2002: 0.2~0.5 parts; additional binder: 14 parts, nanocellulose 0.1. Preparation method of gun mud: Put all the raw materials into the mixer and pre-mix for 10 minutes; then add 90% of the total amount of binder, and wet mill for 30 minutes; add the remaining 10% of binder, and then wet mill for 10 minutes ;Sliced ​​by a mud slicer, then through a mud extruder, extruded into a shape, and bagged, which is the finished product; the extruded temperature is set at 72°C.

Embodiment 3

[0017] Embodiment 3: a kind of for 3200m 3 The blast furnace clay is characterized in that the blast furnace clay is composed of the following components by weight: used waste clay: 10-20 parts; yttrium mullite: 5-15 parts; coal gangue raw ore: 10-20 parts parts; modified magnesium iron aluminum spinel powder: 10~25 parts; modified clay: 10~20 parts; recycled graphite electrode powder: 10~35 parts; thickener: 8~18 parts, asphalt powder: 3~8 parts parts; Glydol n 2002: 0.2~0.5 parts; additional binder: 13 parts, nanocellulose 0.1. Preparation method of gun mud: Put all the raw materials into the mixer and pre-mix for 10 minutes; then add 90% of the total amount of binder, and wet mill for 30 minutes; add the remaining 10% of binder, and then wet mill for 10 minutes ;Sliced ​​by a mud slicer, then through a mud extruder, extruded into a shape, and bagged, which is the finished product; the extruded temperature is set at 65°C.

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Abstract

The invention discloses novel environment-friendly blast furnace stemming which is characterized by comprising the following constituents by weight: 10 to 20 parts of disposable stemming, 5 to 15 parts of Yttrium mullite,10 to 20 parts of coal gangue rawore, 10 to 25 parts of modified magnesia-hercynite powder, 10 to 20 parts of modified clay, 10 to 33 parts of regenerative graphite electrode powder, 8 to 18 parts of a thickening agent, 3 to 8 parts of asphalt powder, 0.2 to 0.5 part of Glydol n 2002, 12 to 14.5 parts of an additive binding agent, and 0.1 part of nano-cellulose, wherein the thickening agent is a mixture of ferrovanadium ore and cupric oxide of which the weight ratio is 1 to 1. The stemming is low in cost, and high in air permeability, and can effectively maintain taphole reaming; during long-term storage, the service performance and operability of the stemming cannot decrease.

Description

technical field [0001] The invention belongs to the field of refractory plastics for blast furnace ironmaking, and in particular relates to a novel environment-friendly blast furnace clay and a preparation method thereof. Background technique [0002] The blast furnace is the main equipment for smelting pig iron. After the iron smelting in the blast furnace is completed, the molten iron is released from the taphole. In order to ensure the continuous smelting, the taphole must be blocked. The material that blocks the taphole is called gun mud. However, during long-term use, the taphole will be corroded, and the taphole will be reamed, resulting in shallow taphole, unstable iron flow, unclean iron, or even large flow, which seriously affects the normal production. Iron, and ultimately affect the service life of the blast furnace and the growth of output. The iron mouth is located inside the furnace, and the temperature is high. Under normal circumstances, people cannot enter ...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 山国强
Owner ANHUI SAFE ELECTRONICS
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