阅读说明：本技术 一种铜冶炼废渣在混凝土中应用的促活剂及其制备方法 (Activator for applying copper smelting waste residues in concrete and preparation method thereof ) 是由 贺海量 于 2020-03-27 设计创作，主要内容包括：本发明公开了一种铜冶炼废渣在混凝土中应用的促活剂及其制备方法,促活剂包含富含磺酸基的改性聚氧乙烯醚、三氟甲磺酸盐以及醇胺,其形态为固体粉末。该促活剂的制备方法,工艺条件温和、设备简单易控、生产效率高、零排放无污染；所生产的新型活性激发固态粉体助剂具有包装运输方便、易于与铜冶炼废渣混合研磨,添加。经本发明的促活剂激发活性的铜冶炼废渣应用于混凝土时,在确保混凝土的和易性、强度和耐久性前提下,可替代混凝土中的矿粉和粉煤灰、降低水泥用量,实现变废为宝,解决铜冶炼废渣绿色处置与混凝土生产所需掺合料供应短缺、质量不稳定的问题。(The invention discloses an activator for applying copper smelting waste residue in concrete and a preparation method thereof. The preparation method of the activator has the advantages of mild process conditions, simple and easily-controlled equipment, high production efficiency, zero emission and no pollution; the produced novel active excited solid powder auxiliary agent has the advantages of convenient packaging and transportation, and easy mixing, grinding and adding with copper smelting waste residue. When the copper smelting waste residue with the activity excited by the activator is applied to concrete, the copper smelting waste residue can replace mineral powder and fly ash in the concrete and reduce the using amount of cement on the premise of ensuring the workability, strength and durability of the concrete, so that the waste is changed into valuable, and the problems of shortage of admixture supply and unstable quality required by green treatment of the copper smelting waste residue and concrete production are solved.)

1. An activator for applying copper smelting waste residue in concrete is characterized in that the activator comprises sulfonic acid-rich polyoxyethylene ether with the total content of more than 90% and triflate coordinated by alcohol amine.

2. A method for preparing the activator for the application of the copper smelting waste slag in concrete according to claim 1, which is characterized by comprising the following steps:

(1) at normal pressure and 50-70 ℃, the polyoxyethylene ether monomer is hot melted;

(2) adding double bond-containing sulfonate into the hot melt, and continuously stirring to uniformly disperse the sulfonate;

(3) adding the persulfate polyethylene glycol emulsion which is quickly sheared and uniformly stirred into a reaction kettle while stirring within 0.5-3.5 hours;

(4) adding the triflate and the alcohol amine into the system in the last step at the same time, stirring for 30-120 minutes, pumping the fluid into a storage tank with a screw shearing blade, and naturally cooling at normal pressure or negative pressure.

3. The method of claim 2, wherein: the double-bond sulfonate is one or more of sodium methallylsulfonate, calcium methallylsulfonate, 2-acrylamide-2-methylpropanesulfonic acid sodium and 2-acrylamide-2-methylpropanesulfonic acid calcium; the using amount of the sulfonate containing double bonds is 5-10% of the mass fraction of the polyoxyethylene ether monomer.

4. The method of claim 2, wherein: the polyethylene glycol refers to one or more of polyethylene glycol 200, 400, 600, 800 and 1000; the dosage of the polyethylene glycol is 0.1-0.4% of the mass fraction of the polyoxyethylene ether monomer.

5. The method of claim 2, wherein: the persulfate is one or more of ammonium persulfate, sodium persulfate and potassium persulfate; the consumption of the persulfate is 0.3-1.2% of the mass fraction of the polyoxyethylene ether monomer.

6. The method of claim 2, wherein: the trifluoromethanesulfonate is one or more of zinc trifluoromethanesulfonate, sodium trifluoromethanesulfonate and calcium trifluoromethanesulfonate; the amount of the triflate is 2-5% of the mass fraction of the polyoxyethylene ether monomer.

7. The method of claim 2, wherein: the alcohol amine refers to one or more of ethanolamine, diethanolamine and triethanolamine; the using amount of the alcohol amine is 1-3% of the mass fraction of the polyoxyethylene ether monomer.

Technical Field

The invention belongs to the field of green processing and resource utilization of industrial non-hazardous solid waste, and particularly relates to an activator for applying copper smelting waste residue in concrete and a preparation method thereof.

Background

With the improvement of environmental awareness and improvement of relevant regulations in China and the world, massive industrial solid wastes from mining, ore processing and mineral smelting face huge pressure and technical requirements for harmless treatment and resource utilization.

The huge demand of copper products in China promotes China to develop into a large copper smelting country, and the copper smelting yield value in 2018 is nearly 9000 million yuan and the copper smelting yield value in 2019 exceeds 9000 million yuan in China. Also associated with the enormous copper production is the production of millions of tons of copper smelting slags each year. The conventional method for disposing the copper smelting waste slag is landfill, but the method occupies a large amount of land and does not meet the environmental protection requirement of current social development due to secondary pollution; and a small amount of the slag is sold to nearby cement enterprises to be used as a cement production auxiliary material, or is used as a low-grade steelmaking raw material when the slag contains high iron content and nearby steel plants exist, but the consumption is very limited.

In recent years, the foundation construction of China is continuously promoted, the demand of concrete is steadily increased, natural sand is limited to mining and is forbidden to be mined, and machine-made sand gradually replaces natural sand, but the machine-made sand is generally thicker, and fine particles are urgently needed to supplement the shortage of fine aggregate gradation; on the other hand, with the gradual compression of thermal power plants and the replacement of the thermal power plants by new energy, steel plants are integrated, the fly ash and the mineral powder as the traditional admixture for the concrete cannot meet the requirements of the current concrete in terms of quantity and quality, the cost and the price of the fly ash respectively reach over 180 yuan/ton and 350 yuan/ton, the cost and the pressure of the concrete are continuously increased, and the seeking and the development of the novel admixture for the concrete for replacing the fly ash and the mineral powder and reducing the consumption of the cement are urgent.

Copper smelting waste slag is a solid mixture containing elements such as calcium, silicon, aluminum, iron, oxygen and the like, and the processing and modification of the copper smelting waste slag into a novel raw material for concrete production are not reported at present. According to the invention, the developed activator is used for processing the copper smelting waste residues into the composite admixture which can be directly applied to concrete, so that the problem of harmless treatment of a large amount of copper smelting solid wastes is solved, the dilemma that the existing concrete auxiliary cementing material is high in shortage price and insufficient in fine aggregate can be effectively relieved, the waste is really changed into valuable, and the key raw material with high cost performance is provided for important basic engineering such as national infrastructure and the like.

Disclosure of Invention

The invention provides an activator for applying copper smelting waste residues in concrete and a preparation method thereof, which solve the problem that solid waste generated by large amount of copper smelting is not friendly and effective to treat. The recycling problem of the copper smelting waste residue is solved, and the problem of mixing the waste residue and concrete is solved through a medicament.

In order to achieve the purpose, the invention provides the following technical scheme: an activator for copper smelting waste residue applied in concrete and a preparation method thereof, the active ingredient of the activator is triflate of which the total content is more than 90 percent and which is coordinated by sulfonic-group-rich polyoxyethylene ether and alcohol amine, and the preparation method comprises the following steps:

under normal pressure, heat-melting a polyoxyethylene ether monomer with the molecular weight of 1000-3000 in a stainless steel or enamel reaction kettle at the temperature of 50-70 ℃ for 30-90 minutes;

then, adding one or more of 5-10% by mass of double bond-containing sodium methallyl sulfonate, calcium methallyl sulfonate, 2-acrylamide-2-methylpropanesulfonic acid sodium salt and 2-acrylamide-2-methylpropanesulfonic acid calcium salt into the hot melt within 10-30 minutes under the stirring of 30-60 rpm;

then, weighing one or more of ammonium persulfate, sodium persulfate and potassium persulfate according to the mass fraction of 0.3-1.2% of the polyoxyethylene ether monomer, weighing one or more of polyethylene glycol 200, 400, 600, 800 and 1000 according to the mass fraction of 0.1-0.4% of the polyoxyethylene ether monomer, fully mixing the two into polyethylene glycol emulsion by using a premixing barrel with shearing and stirring, and adding the emulsion into the reaction kettle within 0.5-3.5 hours under the stirring of 30-60 rpm;

finally, weighing one or more of zinc trifluoromethanesulfonate, sodium trifluoromethanesulfonate and calcium trifluoromethanesulfonate according to the mass fraction of 2-5% of polyoxyethylene ether, weighing one or more of ethanolamine, diethanolamine and triethanolamine according to the mass fraction of 1-3% of polyoxyethylene ether, simultaneously adding the trifluoromethanesulfonate and the alkanolamine into the reaction system under the stirring of 30-60rpm, stirring for 30-120 minutes, pumping fluid into a storage tank with a screw shearing blade, and naturally cooling at normal pressure or negative pressure to obtain the novel auxiliary material which can excite the activity of the copper smelting waste residue and is applied to the concrete

Compared with the prior art, the invention has the following beneficial effects:

the preparation method of the activator for applying the copper smelting waste residue to the concrete has mild preparation process conditions, easy realization of equipment automation, high production efficiency, zero emission and no pollution; the synthesized activator has the advantages of convenient packaging and transportation, simple and convenient addition to copper smelting slag, and capability of effectively exciting copper smelting slag to become active admixture and active fine aggregate, and further being directly applied to concrete production to improve the workability, mechanical property and durability of concrete. The activator realizes the recycling of copper waste residue resources, saves energy, protects environment and simultaneously ensures the quality and the yield of concrete.

Detailed Description

The present invention will be further described with reference to the following examples.