JPH083623A - Slag removing material - Google Patents

Abstract

PURPOSE:To produce a slag removing material which does not generate smoke and stimulative smell and is low in radiation heat by sticking black dye slag consisting of iron oxide to inorg. ore using glue for adhesion. CONSTITUTION:The black dye slag consisting of the iron oxide is stuck to the inorg. ore (any of obsidian, pearl spar, pumicious sand, pumice and pearlite or a mixture composed of >=2 kinds thereof) with the flue for adhesion (sodium silicate). As a result, the slag removing material which does not generate smoke and stimulative smell, is low in radiation heat at the time of transporting a melt and casting and is capable of improving the working environment is obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast iron, cast steel, or molten alloy descaling material.

[0002]

2. Description of the Related Art When pouring molten metal of cast iron, cast steel or alloys of these into a mold with a glass or ladle, in order to remove the slag (oxide) on the surface of the molten metal in the glass or ladle. Slag material is used. This slag material also has the effect of suppressing radiant heat during the transportation of molten metal and casting.
The heat rise at the work site was suppressed. In the past, straw, scabbard, chaff, etc. have been used as the slag material used on the surface of the molten metal of cast iron, cast steel or these alloys.

[0003]

[Problems to be solved by the invention] However, these straw straws and the like have become difficult to obtain these days, and there are problems such as smoke and irritating odor during use, and troublesome inventory management. . For this reason, a slag removing material having a similar effect has been required with other materials.

[0004]

DISCLOSURE OF THE INVENTION The present invention is a slag removing material obtained by sticking a black dye slag consisting of iron oxide to an inorganic mineral with a sticking glue. As inorganic minerals, obsidian, pearlite,
Any of shirasu, pumice, and perlite, or a mixture of two or more thereof is used. Sodium silicate is preferably used as the pasting glue.

[0005]

EFFECTS OF THE INVENTION When a black dye slag consisting of iron oxide is pasted on an inorganic mineral with a pasting paste, no smoke or irritating odor is generated, and the radiant heat at the time of transporting the molten metal or casting is low, which results in work. The environment could be improved. Conventionally, the black dye residue has been discarded as industrial waste, and the present invention enables reuse of industrial waste. Since the inorganic mineral is any one of obsidian, pearlite, shirasu, pumice, and pearlite, or a mixture of two or more thereof, it is easily available and can be provided at low cost. Since the sizing agent for application is sodium silicate, the sizing agent can be easily obtained and the application operation can be facilitated, and the black dye residue can be reliably applied to the inorganic mineral.

[0006]

Example 1 An adhesive paste made of sodium silicate was mixed with an aqueous solution of a finely powdered black dye residue made of iron oxide,
This was applied to the obsidian granules that had been washed and dried with a sprayer and then dried to obtain a slag material. This slag material,
When used on the molten surface of cast iron, neither smoke nor irritating odor was generated, and the surface temperature of the ladle before adding the slag material was 1420 ° C, whereas the slag material was The surface temperature after addition is 1140 ° C, which reduces the radiant heat.
It was effective enough to improve the working environment. The surface temperature was 80 degrees lower than when the obsidian granules were directly used as a slag material on the surface of the molten metal, and the effect of suppressing radiant heat was maintained even after the surface was used on the surface of the molten metal without discoloring.

[0007]

[Example 2] An adhesive paste made of sodium silicate was mixed with an aqueous solution of a fine powdery black dye residue made of iron oxide,
After washing with water and adhering with dried pumice particles while stirring in a stirrer, water was removed by forced drying to obtain a slag material. When this slag material was used on the molten surface of cast iron, neither smoke nor irritating odor was generated, and the surface temperature of the ladle before adding the slag material was 1420 ° C.
However, the surface temperature after adding the slag material was 11
The temperature was 40 ° C, which was sufficiently effective in reducing radiant heat and improving the working environment. The surface temperature is 180 degrees lower than when the pumice granules are directly used as a slag material on the surface of the molten metal, and the color does not fade even after using it on the surface of the molten metal at 1420 degrees. The effect lasted.

Claims (3)

[Claims] 1. A slag removing material obtained by sticking a black dye slag comprising iron oxide to an inorganic mineral with a sizing adhesive. 2. The decontamination material according to claim 1, wherein the inorganic mineral is any one of obsidian, pearlite, shirasu, pumice, and pearlite, or a mixture of two or more thereof. 3. The slag removing material according to claim 1, wherein the pasting paste is sodium silicate.