Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite exothermic agent used for preparing high temperature alloy steel by attapulgite

A technology of high-temperature alloy steel and attapulgite, which is applied in the field of metallurgical paving products, can solve the problems of low heating temperature and weakened reaction speed, and achieve the effects of rapid reaction, secondary feeding and increased yield

Active Publication Date: 2012-12-12
马鞍山科润冶金材料有限公司
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the disadvantages of obviously weakening the reaction speed and low heating temperature after the volume expansion of the powdery heating agent, the present invention produces and develops a composite heating agent for high-temperature alloy steel made of attapulgite, which solves the problems existing in the powdery heating agent

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A composite heating agent for high-temperature alloy steel made of attapulgite, which is made of the following raw materials by weight percentage: 10% aluminum powder, 5% carbon powder, 10% attapulgite, and 27% modified fly ash , iron oxide 17%, organosilicon phlogopite 11%, bauxite 11%, acidified graphite 9%, the preparation of the modified fly ash: the fly ash after burning is placed in 20-25% Sulfuric acid, 16-24% sodium hydroxide solution, stirring for 20-22h, then the fly ash filtered out from the acid-base immersion solution, rinsed with deionized water until neutral, and tested with PH test paper to confirm, and finally filtered, Dry, and then send the three materials into the fluidized bed according to the weight ratio of fly ash: calcium carbonate powder: quartz sand powder 1: 0.3-0.5: 0.5-0.8, roasting at 1050-1100 ° C for 1-1.5 hours, cooling and grinding into Nano powder.

[0016] The present invention uses fly ash to modify, increases its dispersibility an...

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

PUM

No PUM Login to View More

Abstract

The invention discloses a composite exothermic agent used for preparing high temperature alloy steel by attapulgite. The composite exothermic agent is prepared by processing the following raw materials by weight: 10-15% of aluminium powder, 4-7% of charcoal powder, 9-11% of attapulgite, 22-30% of coal ash, 10-21% of ferric oxide, 10-12% of organosilicone phlogopite, 10-13% of bauxite and 6-10% of acidized graphite. The coal ash is prepared by the following steps: placing the scorched coal ash into 20-25% of sulfuric acid solution and 16-24% of sodium hydroxide solution in sequence; stirring for 20-22 hours; filtering out coal ash from acid-base immersion liquid; washing coal ash by deionized water to be neutral; determining coal ash by testing with pH test paper; and finally filtering and drying. With the adoption of the composite exothermic agent used for preparing the high temperature alloy steel by attapulgite, the problem of a powdery exothermic agent is solved.

Description

technical field [0001] The invention relates to a metallurgical paving product for smelting weather-resistant steel, in particular to a composite heating agent for attapulgite-made high-temperature alloy steel. Background technique [0002] In the early 1980s, the anti-shrinkage product for the head of the weathering steel ingot in my country's metallurgical industry was a thermal insulation anti-shrinkage agent. The anti-shrinkage agent only had a heat preservation effect and basically did not generate heat. . In the 1990s, metallurgical pavement manufacturers designed and developed powdery heat-generating anti-corrosion materials with aluminum (Al), sodium nitrate (NaNO3), iron powder (Fe2O3), wood chips, expanded graphite (acidified graphite) and other materials based on the principle of aluminothermic reaction. Shrinkage agent, referred to as heating agent, this product is compounded with heat-expanding acidified graphite material, which has dual functions of heating and...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22D7/10
Inventor 鲁方志
Owner 马鞍山科润冶金材料有限公司