CN106694797A

CN106694797A - Coal ash casting coating

Info

Publication number: CN106694797A
Application number: CN201510784276.8A
Authority: CN
Inventors: 刘建荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-13
Filing date: 2015-11-13
Publication date: 2017-05-24

Abstract

The invention provides a coal ash casting coating. The coal ash casting coating takes 50% of coal ash, 30% of high-aluminum bauxite, 8% of red mud, 8% of steel plant bag dust and 4% of water granulated slag as fire-resistant powder, takes 3% of organic bentonite, 0.4%-0.5% of CMC, 1.5%-3.5% of phenol-formaldehyde resin, 0.5% of PVB and 0.1% of a defoaming agent as additives, takes 5%-10% of slaked lime, 5%-20% of aluminum ash, cellulose and a thickening agent as binding agents, and takes water as a carrier liquid. The adhesion property of the coating is improved by the use of the binding agents; red mud, steel plant bag dust, high-aluminum coal gangue powder and water granulated slag are recycled as fire-resistant materials for production, so that the production cost and the dust pollution are reduced, and the environment protection is facilitated to a certain extent; and the coating saves resources and is an effective technical measure for increasing the economic benefits of cast products.

Description

A kind of coal ash casting paint

Technical field

The present invention relates to a kind of coating, especially a kind of coal ash casting paint.

Background technology

Cast paint is a kind of fireproof coating for Foundry Production, cast paint particle is relatively thick, but heat-insulating property is good, casting misrun and cold shut when can prevent from casting, it is suitable to thin thin section casting and Large Plane, it is also applied for inlet, wheel hub, piston, connecting rod, cylinder etc., cast paint is general main by refractory powder, additive and carrier fluid are constituted, refractory material is resistant to elevated temperatures stepless mineral material, but these traditional coating have that adhesive property is not very strong, and nowadays resource circulation utilization is increasingly valued by people, red mud, high alumina coal gangue powder, steel plant's sack dust and grain slag are resistant to elevated temperatures stepless mineral material, but do not used them as refractory material rationally also in production technology nowadays.

The content of the invention

It is existing problem more than solving, the invention discloses a kind of coal ash casting paint.

The coal ash casting paint is using 50% flyash, 30% alumine, 8% red mud, 8% steel plant's sack dust and 4% grain slag as refractory powder, using 3% organobentonite, 0.4%~0.5% CMC, 1.5%~3.5% phenolic resin, 0.5% PVB and 0.1% defoamer as additive, using 5%~10% ripe lime, 5%~20% aluminium ash, cellulose and thickener as binding agent, using water as carrier fluid.

Further, the organobentonite carries out swelling first with dimethylbenzene before the use, the consumption of dimethylbenzene is 5-10 times of bentonite, the CMC itself is melted using cold water before the use be made colloidal and concentration be 1%~2% the aqueous solution, soak time is more than 24h, the phenolic resin is first incorporated alcohol before the use, and the consumption of alcohol is 3~5 times of phenolic resin.

Further, the alumine can also be substituted using high alumina coal gangue powder.

Further, the carrier fluid can be with alcohol that concentration is 35%~40%.

Beneficial effect：The present invention uses binding agent; strengthen the adhesive property of coating; aluminium ash, red mud, steel plant's sack dust, high alumina coal gangue powder and grain slag are carried out into production recycling as refractory material; not only reduce production cost; and reduce the pollution of dust; it is the effective technology measure for improving cast product economic benefit present invention saves resource to a certain extent beneficial to the protection of environment.

Specific embodiment

The present invention is described in further details by embodiment.

The coal ash casting paint is with 50% flyash,30% alumine,8% red mud,8% steel plant's sack dust and 4% grain slag are used as refractory powder,With 3% organobentonite,0.4%~0.5% CMC,1.5%~3.5% phenolic resin,0.5% PVB and 0.1% defoamer are used as additive,With 5%~10% ripe lime,5%~20% aluminium ash,Cellulose and thickener are used as binding agent,Using water as carrier fluid,The organobentonite carries out swelling first with dimethylbenzene before the use,The consumption of dimethylbenzene is 5-10 times of bentonite,The CMC itself is melted using cold water before the use be made colloidal and concentration be 1%~2% the aqueous solution,Soak time is more than 24h,The phenolic resin is first incorporated alcohol before the use,The consumption of alcohol is 3~5 times of phenolic resin,Gangue is the solid waste of discharge during coal mining process and coal washing,It is that a kind of a kind of phosphorus content in coalification course with coal seam association is relatively low,The black gray expandable rock harder than coal,High alumina coal gangue powder is also a kind of resistant to elevated temperatures stepless mineral material,The alumine can also be substituted using high alumina coal gangue powder,The carrier fluid can be with alcohol that concentration is 35%~40%.

Embodiment：By load weighted alcohol, flyash, alumine (high alumina coal gangue powder), red mud, steel plant's sack dust, grain slag, organobentonite, CMC, phenolic resin, PVB, aluminium ash, ripe lime, cellulose and thickener are added sequentially to be stirred in mixer, the speed of mixer is controlled in 600~1000r/min, mixing time is 1~2h, then 30min is ground in the coating feeding colloid mill after being stirred by mixer, and according to the Standard entertion carrier fluid of coating material production, the cost of water is very low, using water as carrier fluid, coating cost can be reduced, if in order to the viscosity of coating and the drying property of film are more preferable, water as carrier fluid can be replaced using the alcohol that concentration is 35%~40%.

General principle of the invention and principal character and advantages of the present invention has been shown and described above; it should be understood by those skilled in the art that; the present invention is not limited to the above embodiments; merely illustrating the principles of the invention described in above-described embodiment and specification; without departing from the spirit and scope of the present invention; various changes and modifications of the present invention are possible; these changes and improvements all fall within the protetion scope of the claimed invention, and the claimed scope of invention is by appending claims and its equivalent thereof.

Claims

1. a kind of coal ash casting paint, it is characterised in that：The coal ash casting paint is with 50% flyash, 30% alumine, 8% Red mud, 8% steel plant's sack dust and 4% grain slag as refractory powder, with 3% organobentonite, 0.4%~0.5% CMC, 1.5%~3.5% Phenolic resin, the defoamer of 0.5% PVB and 0.1% as additive, with 5%~10% ripe lime, 5%~20% aluminium ash, cellulose and increasing Thick dose as binding agent, using water as carrier fluid.

2. a kind of coal ash casting paint according to claim 1, it is characterised in that：The organobentonite is before the use first with two Toluene carries out swelling, and the consumption of dimethylbenzene is 5-10 times of bentonite, and itself is melted be made glue before the use by the CMC using cold water Body shape and concentration are 1%~2% aqueous solution, and soak time is more than 24h, and the phenolic resin is first incorporated alcohol before the use, alcohol Consumption is 3~5 times of phenolic resin.

3. a kind of coal ash casting paint according to claim 1, it is characterised in that：The alumine can also use high alumina coal gangue Powder is substituted.

4. a kind of coal ash casting paint according to claim 1, it is characterised in that：The carrier fluid can be 35%~40% with concentration Alcohol.