CN-116730671-B - Tailing mud aggregate inorganic stone paint and preparation method thereof

Abstract

The invention discloses an inorganic stone paint for tailing mud aggregate and a preparation method thereof. The inorganic stone paint consists of inorganic gel main component, coagulation regulating component, pigment component, anti-alkali-efflorescence component and viscosity regulating thickening component. The inorganic real stone paint of the invention uses tailing mud to replace the sand for traditional construction as aggregate, uses inorganic cementing material to replace polymer emulsion as matrix, solves the problem of cement-based mortar that the cement-based mortar becomes alkali when meeting water by utilizing the ion exchange characteristic of calcium bentonite, and has the characteristics of good cohesiveness with building matrix, high hardness, environmental protection, water resistance, durability, no alkali efflorescence, low cost, fast curing speed and simple preparation process.

Inventors

• LIU JINGYI

Assignees

• 陕西铁路工程职业技术学院

Dates

Publication Date

20260505

Application Date

20220302

Claims (3)

1. 1. The inorganic real stone paint is characterized by comprising an inorganic gelling main component, a setting component, a pigment component, an anti-efflorescence component and a viscosity-regulating thickening component, wherein the inorganic gelling main component comprises white silicate cement, tail mineral mud, silica fume, a water reducing agent and water, the setting component comprises calcium formate, aluminum sulfate and triethanolamine, the pigment component comprises titanium pigment and inorganic color pigment, the anti-efflorescence component comprises calcium bentonite, and the viscosity-regulating thickening component comprises hydroxypropyl methyl cellulose and sodium dodecyl sulfate.
2. 2. The inorganic real stone paint for tailing mud aggregate, which is disclosed in claim 1, wherein the weight proportion of each raw material in the inorganic gelatinization main component is white silicate cement, tailing mud, water reducer, water= (13-21), 79-87, 1.5 (0.2-0.4), 13.5-16.5, the weight proportion of each raw material in the setting component is calcium formate, aluminum sulfate, triethanolamine= (0.2-0.5), 0.5-0.8, 0.03, the weight proportion of inorganic color pigment and titanium pigment in the pigment component is 3.0:6.0, the anti-whiskering component is 2.0 weight parts of calcium bentonite, and the viscosity-adjusting thickening component is composed of 0.001 weight parts of sodium dodecyl sulfate and 0.002 weight parts of hydroxypropyl methyl cellulose with the viscosity of 5-10 ten thousand mPa.s.
3. 3. The tailing mud aggregate inorganic real stone paint according to claim 1, which is prepared by the following steps: Step 1, respectively weighing titanium dioxide, silica fume, inorganic color pigment and calcium bentonite, then putting into a ball mill, and mixing and grinding for 0.5 hour to obtain a dry material A; Step 2, mixing and uniformly stirring a water reducing agent, hydroxypropyl methylcellulose, sodium dodecyl sulfate and 80% of water to obtain a liquid A; Step 3, mixing calcium formate, aluminum sulfate and triethanolamine with the rest 20% of water, stirring and dissolving uniformly to obtain a liquid B; step 4, adding the white silicate cement and the tailing mud into a stirrer, stirring and mixing for 2 minutes to obtain a dry material B; And 5, mixing and stirring the dry material B and the dry material A in a stirrer for 2 minutes, adding the liquid A, stirring and mixing for 2 minutes, and finally adding the liquid B and stirring uniformly to obtain the inorganic real stone paint.

Description

Tailing mud aggregate inorganic stone paint and preparation method thereof Technical Field The invention relates to a novel building material, in particular to an inorganic stone paint for tailing mud aggregates and a preparation method thereof, and belongs to the technical field of civil engineering materials. Background Tailings are industrial waste materials formed in mine beneficiation engineering. In recent years, because of limited collection and shortage of natural building sandstone aggregate, coarse particles in tailings are screened out to be used as machine-made sand, and the screened fine-grained tailings mud is too fine in fineness, large in specific surface area and high in water absorption rate, cannot be used as construction sand, and has not been suitable for use at present and is piled up in a tailings pond. The accumulation of the tailing sludge not only occupies land and pollutes the environment, but also easily forms potential safety hazards such as dam break, debris flow and the like, thereby becoming a nuisance. Therefore, the development and utilization of the tailing sludge not only can change waste into valuable, but also can reduce environmental pollution and eliminate potential safety hazards. The stone paint is also called as sand wall paint, and is a common building outer wall decoration material. As one of the substitutes for dry-hanging stone for building outer walls, the stone-like paint is mainly prepared from natural stone powder with various colors and polymer film-forming substances, so that the building outer walls have stone-like effects. The film-forming substances in the traditional real stone paint are mainly some polymer emulsions and auxiliary agents thereof. They form a continuous network after coating, which not only binds together the various inorganic particles, but also provides the coating with a water-repellent function and is therefore an indispensable substance in conventional stone-like paints. The use of these polymer emulsions and their auxiliaries, however, not only leads to increased costs for the stone-like lacquers, but also may present VOC pollution or ageing problems. Cement facing mortar is also a common building exterior wall decoration material. The cement facing mortar is also called cement-based multi-color decoration powder (color mortar for short), and has the characteristics of natural color texture, soft vision, low cost, easy construction and the like. However, the traditional cement facing mortar is easy to "whiskering" after meeting water in application, and the decoration effect is affected. In addition, like the real stone paint, the aggregates used in the traditional cement facing mortar are also very attractive colored sand or quartz sand, and the minimum is the up-to-standard construction sand, so that the cost of the facing mortar is higher. Therefore, if the inorganic real stone paint product is prepared by taking the tailing slurry as the aggregate under the condition of omitting the polymer film forming substance, and the problem of 'whiskering' of cement facing mortar can be solved, the cost of the real stone paint can be reduced, the durability of the real stone paint can be improved, and the method has important significance for the resource utilization of the tailing slurry and the development of building outer wall decorative materials. Disclosure of Invention Aiming at the problems of resource utilization of the existing tailings, cost and environmental protection of the real stone paint and 'whiskering' of facing mortar, the invention aims to provide an inorganic real stone paint material taking the tailings as aggregate and a preparation method thereof. In order to achieve the above object, the present invention adopts the following technical scheme: The inorganic stone paint consists of inorganic gelatinizing main component, setting regulating component, pigment component, anti-whiskering component and viscosity regulating thickening component. The inorganic gel main component consists of white silicate cement, tailing slurry, silica fume, a water reducing agent and water, the setting regulating component consists of calcium formate, aluminum sulfate and triethanolamine, the pigment component consists of titanium white and inorganic color pigment, the anti-whiskering component consists of calcium bentonite, and the setting regulating thickening component consists of hydroxypropyl methyl cellulose and sodium dodecyl sulfate. The inorganic real stone paint for the tailing mud aggregate comprises inorganic gelatinization main components, wherein the inorganic gelatinization main components are white silicate cement with the strength of No. 42.5, the tailing mud is tailing mud with the granularity smaller than the specified granularity required by national standard GB/T14684-2011 and line standard JGJ 52-2006, the apparent relative density is more than 2.5, the MB value of methylene blue test is less than 1.4, the conten