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Drainage agent special for alloy bushing and preparation method thereof

The technology of draining agent and bushing is applied in the field of special draining agent for alloy bushing and its preparation. The effect of stable expansion coefficient

Inactive Publication Date: 2017-03-15
潜山市凯创橡塑机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The refining process in the smelting of alloy bushings generally requires that the drainage agent has super refractoriness, resistance to molten steel erosion, resistance to molten steel penetration and reasonable sintering thickness, but the current drainage agent used for refining has a relatively low casting rate, and at the same time There are problems such as low refractoriness and easy introduction of inclusions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1 A special drainage agent for alloy bushings, which is composed of the following components by mass percentage: Gr 2 o 3 15%, SiO 2 12%, MgO 8%, Al 2 o 3 6%, Fe 2 o 3 2%.

[0014] A special drainage agent for alloy bushings and a preparation method thereof, comprising the following steps:

[0015] (1) Weigh 25-40 parts of chromium ore, 10-25 parts of refined silica sand, 5-15 parts of fused magnesia particles, 3-8 parts of feldspar sand, 12-15 parts of magnesium aluminum spinel, and 2 parts of quartz sand -5 parts, 5-8 parts of potassium feldspar, 6-10 parts of graphite powder, add to the mixing equipment in turn, stir at high speed for 15-20 minutes, then add regulator, stir at high speed for 8-10 minutes, then add the above components 8-10% of the total weight of water, high-speed stirring and mixing to obtain a mixture;

[0016] (2) Put the above-mentioned step mixture in a rotary drying oven and bake at a temperature of 170-200°C for 1.5-2 hou...

Embodiment 2

[0019] Embodiment 2 A special drainage agent for alloy bushings, which is composed of the following components by mass percentage: Gr 2 o 3 17%, SiO 2 25%, MgO 15%, Al 2 o 3 15%, Fe 2 o 3 8%.

[0020] A special drainage agent for alloy bushings and a preparation method thereof, comprising the following steps:

[0021] (1) Weigh 25-40 parts of chromium ore, 10-25 parts of refined silica sand, 5-15 parts of fused magnesia particles, 3-8 parts of feldspar sand, 12-15 parts of magnesium aluminum spinel, and 2 parts of quartz sand -5 parts, 5-8 parts of potassium feldspar, 6-10 parts of graphite powder, add to the mixing equipment in turn, stir at high speed for 15-20 minutes, then add regulator, stir at high speed for 8-10 minutes, then add the above components 8-10% of the total weight of water, high-speed stirring and mixing to obtain a mixture;

[0022] (2) Put the above-mentioned step mixture in a rotary drying oven and bake at a temperature of 170-200°C for 1.5-2 h...

Embodiment 3

[0025] Embodiment 3 A special drainage agent for alloy bushings, which is composed of the following components by mass percentage: Gr 2 o 3 16%, SiO 2 18%, MgO 12%, Al 2 o 3 14%, Fe 2 o 3 6%.

[0026] A special drainage agent for alloy bushings and a preparation method thereof, comprising the following steps:

[0027] (1) Weigh 25-40 parts of chromium ore, 10-25 parts of refined silica sand, 5-15 parts of fused magnesia particles, 3-8 parts of feldspar sand, 12-15 parts of magnesium aluminum spinel, and 2 parts of quartz sand -5 parts, 5-8 parts of potassium feldspar, 6-10 parts of graphite powder, add to the mixing equipment in turn, stir at high speed for 15-20 minutes, then add regulator, stir at high speed for 8-10 minutes, then add the above components 8-10% of the total weight of water, high-speed stirring and mixing to obtain a mixture;

[0028] (2) Put the above-mentioned step mixture in a rotary drying oven and bake at a temperature of 170-200°C for 1.5-2 h...

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Abstract

The invention discloses drainage agent special for an alloy bushing. The drainage agent consists of the following ingredients in parts by weight: 15-17% of Gr2O3, 12-25% of SiO2, 8-15% of MgO, 6-15% of Al2O3 and 2-8% of Fe2O3. Compared with the prior art, the drainage agent is characterized in that deficiencies in the prior art are overcome, a proportion and a production technology are reasonably set to provide the drainage agent special for the alloy bushing. The drainage agent special for the alloy bushing has the advantages of low cost, stable coefficient of expansion of silica quartz sand at a high temperature, good high-temperature sintering performance, good molten steel and molten slag corrodibility resistance, even particle granularity distribution, good mobility, small thermal expansivity and high free-opening rate.

Description

technical field [0001] The invention relates to the technical field of alloy bushing processing, in particular to a special drainage agent for alloy bushings and a preparation method thereof. Background technique [0002] At present, the drainage agents used in domestic alloy bushings are roughly divided into two categories according to steel types: 1. stainless steel drainage agents, and 2. carbon steel drainage agents. However, from the steelmaking process and molten steel composition, stainless steel is divided into ordinary stainless steel drainage agent, ultra-pure stainless steel drainage agent; carbon steel drainage agent is divided into medium and high carbon steel drainage agent, low carbon, ultra-low carbon steel drainage agent and special steel drainage agent There are three types of drainage agents. In order to meet the needs of steel smelting and technology, the above drainage agents are designed to optimize the type and proportion of input materials. In order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66B22D41/46
CPCC04B35/66B22D41/46C04B2235/3206C04B2235/3222C04B2235/3241C04B2235/3418C04B2235/3463C04B2235/3472C04B2235/425C04B2235/428
Inventor 张加和
Owner 潜山市凯创橡塑机械制造有限公司
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