阅读说明：本技术 一种仿石漆骨料的制备方法 (Preparation method of stone-like paint aggregate ) 是由 刘祥 于 2021-01-16 设计创作，主要内容包括：本发明提供一种仿石漆骨料的制备方法,包括(1)将回收的石材尾矿除泥土杂质物,按莫氏硬度分类,洗选凉干；(2)送入粉碎机破碎为不大于3×3cm的石籽；(3)将石籽输送到环辊磨机研磨,(4)将出料口设计制作对应不同网孔径振动筛设备,分别取得对应规格的石料颗粒；(5)用植物油、石油副产品和桐油酸酐水解液制备改性剂,经过一体包裹改性机对产品实施表面功能改性。本发明利用粒度分布网振控制设备和研制硼酸偶联改性剂,解决了粒度分布和与有机材料相容的关键技术问题,产品活化率≥87%、与有机高分子材料相容率≥90%,符合仿石漆骨料的技术质量要求,有效节约利用废弃资源。(The invention provides a preparation method of stone-like paint aggregate, which comprises the steps of (1) removing mud and soil impurities from recycled stone tailings, classifying the stone tailings according to Mohs hardness, washing, selecting and drying; (2) feeding into a pulverizer to pulverize into stone seeds with a size of not more than 3 × 3 cm; (3) conveying stone seeds to a ring roller mill for grinding, (4) designing and manufacturing vibrating screen equipment corresponding to different mesh diameters at a discharge port, and respectively obtaining stone particles with corresponding specifications; (5) vegetable oil, petroleum by-products and tung oil anhydride hydrolysate are used for preparing a modifier, and the surface function modification is carried out on the product by an integrated coating modification machine. The invention utilizes the particle size distribution net vibration control equipment and develops the boric acid coupling modifier, solves the key technical problems of particle size distribution and compatibility with organic materials, has the product activation rate of more than or equal to 87 percent and the compatibility rate with organic polymer materials of more than or equal to 90 percent, meets the technical quality requirement of stone-like paint aggregate, and effectively saves and utilizes waste resources.)

1. The preparation method of the stone-like paint aggregate is characterized by comprising the following steps:

(1) the recovered stone tailings are classified according to Mohs hardness after soil impurities are removed, and are respectively washed, selected and dried;

(2) feeding the stone tailings into a crusher to crush the stone tailings into stone seeds with the size of not more than 3 multiplied by 3 cm;

(3) conveying the stone seeds to a ring roller mill for grinding at the rotating speed of 90-110r/min, the current of a main machine of 65-70A, the current of a fan of 60-65A and the feeding speed of 3-5T/H;

(4) designing and manufacturing vibrating screen equipment corresponding to different mesh diameters at the discharge port, and respectively obtaining stone particles with corresponding specifications;

(5) vegetable oil, petroleum by-products and tung oil anhydride hydrolysate are used for preparing a modifier, and the surface function modification is carried out on the product by an integrated coating modification machine.

2. The method for preparing stone-like paint aggregate according to claim 1, wherein in the step (1), the moisture content of the stone tailings after being dried is less than or equal to 0.5%, the stone powder content is less than or equal to 10%, and the mud block content is less than or equal to 2.0%.

3. The method for preparing stone-like paint aggregate according to claim 1, wherein in the step (2), the crushed stone seeds have the size specification of 1 x 1cm, 2 x 2cm and 3 x 3cm respectively.

4. The method for preparing stone-like paint aggregate according to claim 1, wherein in the step (4), the mesh diameters of the vibrating screen equipment are respectively set to 0.85mm, 0.425mm, 0.212mm, 0.15mm, 0.105mm and 0.076mm, and six specifications of stone granular products of 20 meshes, 40 meshes, 70 meshes, 100 meshes, 140 meshes and 200 meshes are respectively obtained.

5. The method for preparing stone-like paint aggregate according to claim 1, wherein in the step (5), the vegetable oil comprises one or more of rapeseed oil, peanut oil, cottonseed oil and tea seed oil, and the petroleum byproduct is waste after petroleum is refined into fuel oil.

6. The method for preparing stone-like paint aggregate according to claim 1, wherein in the step (5), the modifier is prepared by: adding vegetable oil and tung oil anhydride hydrolysate into the petroleum by-product, heating to react, filtering and extracting.

7. The method for preparing the stone-like paint aggregate according to claim 5, wherein the weight percentage of the petroleum byproduct, the vegetable oil and the tung oil anhydride hydrolysate is as follows: 60-70% of petroleum byproduct, 25-35% of vegetable oil and 8-15% of tung oil anhydride hydrolysate.

8. The method for preparing stone-like paint aggregate according to claim 5, wherein the heating reaction temperature is 100-150 ℃ and the time is 15-30 min.

9. The method for preparing stone-like paint aggregate according to claim 1, wherein in the step (5), when the product is subjected to surface function modification by an integral coating modification machine, the addition amount of the modifier is 1.5-5%.

Technical Field

The invention relates to the technical field of stone-like paint, in particular to a preparation method of stone-like paint aggregate.

Background

In recent years, new products of stone-like paint series replace new industries of tile decorative materials of inner and outer walls of high-rise buildings, the products are safe and environment-friendly, have the effects of simulating antique and beautiful appearance, meet the value orientation and thinking modes of green development, are widely applied, have large market and wide application range, and drive the development of upstream aggregate industry. The aggregate in the prior stone-like paint formula is an important raw material. The existing aggregate of stone-like paint is mostly made of natural stones such as quartz sand, for example, the quartz sand is adopted as the aggregate in the 'stone-like paint and the preparation method thereof' disclosed in the Chinese patent application (CN 111849258A). The existing stone-like paint aggregate made of natural stone has unreasonable particle size distribution due to limited process, and has to be improved in compatibility effect with organic materials, so that the quality of the stone-like paint is influenced.

Disclosure of Invention

The invention aims to provide a preparation method of stone-like paint aggregate, which can effectively solve the technical problems of particle size distribution and organic material compatibility and can effectively save and utilize waste resources.

In order to achieve the purpose, the technical scheme of the invention is as follows: a preparation method of stone-like paint aggregate comprises the following steps:

(1) the recovered stone tailings are classified according to Mohs hardness after soil impurities are removed, and are respectively washed, selected and dried;

(2) feeding the stone tailings into a crusher to crush the stone tailings into stone seeds with the size of not more than 3 multiplied by 3 cm;

(3) conveying the stone seeds to a ring roller mill for grinding at the rotating speed of 90-110r/min, the current of a main machine of 65-70A, the current of a fan of 60-65A and the feeding speed of 3-5T/H;

(4) designing and manufacturing vibrating screen equipment corresponding to different mesh diameters at the discharge port, and respectively obtaining stone particles with corresponding specifications;

(5) vegetable oil, petroleum by-products and tung oil anhydride hydrolysate are used for preparing a modifier, and the surface function modification is carried out on the product by an integrated coating modification machine.

Further, in the step (1), the water content of the stone tailings after drying is less than or equal to 0.5%, the stone powder content is less than or equal to 10%, and the mud block content is less than or equal to 2.0%.

Furthermore, in the step (2), the sizes of the crushed stone seeds are 1 × 1cm, 2 × 2cm and 3 × 3cm respectively.

Further, in the step (4), the mesh diameters of the vibrating screen equipment are respectively set to be 0.85mm, 0.425mm, 0.212mm, 0.15mm, 0.105mm and 0.076mm, and stone granular products with six specifications of 20 meshes, 40 meshes, 70 meshes, 100 meshes, 140 meshes and 200 meshes are respectively obtained.

Further, in the step (5), the vegetable oil comprises one or more of rapeseed oil, peanut oil, cottonseed oil and tea seed oil, and the petroleum byproduct is waste after petroleum refining fuel oil.

Further, in the step (5), the modifier is prepared by the following steps: adding vegetable oil and tung oil anhydride hydrolysate into the petroleum by-product, heating to react, filtering and extracting.

Furthermore, the weight percentage of the petroleum byproduct, the vegetable oil and the tung oil anhydride hydrolysate is as follows: 60-70% of petroleum byproduct, 25-35% of vegetable oil and 8-15% of tung oil anhydride hydrolysate, and the mixture is heated to 100-150 ℃ for 15-30 min.

Further, in the step (5), when the product is subjected to surface function modification by an integral coating modification machine, the addition amount of the modifier is 1.5-5%.

The invention utilizes the particle size distribution net vibration control equipment and develops the boric acid coupling modifier, solves the key technical problems of particle size distribution and compatibility with organic materials, has the product activation rate of more than or equal to 87 percent and the compatibility rate with organic polymer materials of more than or equal to 90 percent, meets the technical quality requirement of stone-like paint aggregate, effectively saves and utilizes waste resources, and improves social benefits and economic benefits.

Detailed Description

The technical solution of the present invention will be described in detail with reference to examples.

Example 1: a preparation method of stone-like paint aggregate comprises the following steps:

(1) and after removing the muddy soil impurities from the recovered waste stone residues, rocks, tailings and the like, storing the waste stone residues, the rocks, the tailings and the like according to the Mohs hardness classification.

(2) Respectively washing and drying the classified stone slag, rock, tailings and the like, wherein the water content is less than or equal to 0.5 percent, the stone powder content is less than or equal to 10 percent, and the mud block content is less than or equal to 2.0 percent

(3) The prepared material is sent into a crusher to be crushed into stone seeds with the sizes of 1 multiplied by 1cm, 2 multiplied by 2cm and 3 multiplied by 3 cm.

(4) The stone seeds are conveyed to a ring roller mill for grinding, the rotating speed is 90-110r/min, the main machine current is 65-70A, the fan current is 60-65A, and the feeding is 3-5T/H.

(5) Controlling the particle distribution, designing and manufacturing six layers of vibrating screen equipment with corresponding mesh diameters of 0.85mm, 0.425mm, 0.212mm, 0.15mm, 0.105mm and 0.076mm at a discharge port, and respectively obtaining stone particle products with six specifications of 20 meshes, 40 meshes, 70 meshes, 100 meshes, 140 meshes, 200 meshes and the like.

(6) And (4) surface functional treatment. Extracting organic acid from vegetable oil and petroleum by-products, and preparing the boric acid ester coupling modifier by using the organic acid and tung oil anhydride hydrolysate. The specific method comprises the following steps: purchasing waste petroleum byproducts after refining fuel oil as raw materials; secondly, 62 percent of the petroleum byproduct, 30 percent of vegetable oil and 8 percent of tung oil anhydride hydrolysate are loaded into a reaction tank with a heating and filtering device according to the mass percentage; thirdly, heating to 100-150 ℃ and reacting for 15-30 min; and fourthly, preparing the boric acid coupling modifier through distillation and filtration. The product is subjected to surface functional modification by an integral coating modification machine, the dosage of the dropwise added boric acid coupling modifier is 1.5-5% of that of the stone particle product, the product activation rate is more than or equal to 87%, and the compatibility rate with organic polymer materials is more than or equal to 90%.

The stone-like paint aggregate prepared by the method meets the following quality and technical standards through inspection: firstly, particle size distribution: 20-40 meshes of 1# product, 2#40-70 meshes, 3#70-140 meshes and 4#140-200 meshes; the methylene blue value: 0.5-1.4 mb; third, firmness: 0.8-10%; fourth, crushing rate: less than or equal to 30 percent; fifthly, reacting the alkali aggregate: less than or equal to 0.1 percent; sixthly, oil absorption value: 20-25%: water content of the droplets is 0.3-0.5%.