Titanium gypsum foamed building block and preparation method thereof

Abstract

The invention discloses a titanium gypsum foamed building block and a preparation method thereof. The titanium gypsum foamed building block is prepared from the following raw materials: 440-460 parts by weight of titanium gypsum, 200-250 parts by weight of cement, 1-4.5 parts by weight of foaming agent and 150-300 parts by weight of water, wherein the foaming agent is composed of the following substances by weight percent: 1-2% of sodium hydrogen sulfite, 1-2% of sodium sulfosuccinate lauric alcohol mono ester, 5-7% of sodium hydroxide, 5-8% of bone glue, 10-13% of ox horn powder, 35-40% of vegetable protein, 6-10% of lauric diethanolamide, 4-5% of gelatin, 1-2% of polyoxyethylene octyl phenol ether, 1-2% of lauramidopropyl dimethylamine ethyllactone, 0.7-1% of methyl glucose dioleate and the balance of water. The foaming agent is prepared by a three-step mixed method which specifically comprises the following steps of: selecting the components of the foaming agent, mixing the components according to a certain order at a specific temperature for certain time and then reacting the mixture; consequently, the foaming agent is capable of improving the porosity and pore homogeneity of the titanium gypsum building block. The titanium gypsum foamed building block has the following properties that softening coefficient is greater than or equal to 0.67; dry density is less than or equal to 620 kg / m<3>; compressive strength is greater than or equal to 5 MPa.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a titanium gypsum foaming block using leftover waste produced by titanium dioxide as a raw material and a preparation method thereof. Background technique [0002] Titanium gypsum is a waste residue with dihydrate gypsum as the main component produced by adding lime (or calcium carbide slag) to neutralize a large amount of acid wastewater in order to treat acid wastewater when sulfuric acid method is used to produce titanium dioxide. It contains certain impurities and generally has The nature of the following aspects. High water content, high viscosity, high impurity content; weakly acidic; when it comes out of the waste residue treatment workshop, it is grayish brown at first, and ferrous ions are gradually oxidized to ferric ions in the air and turn red (yellowish) , so it is also known as red mud, red and yellow gypsum; therefore, it can be used to make unburned bric...

AI Technical Summary

Problems solved by technology

[0005] Due to the deficiencies in the existing technology, such as: "Moisture-proof titanium gypsum hollow block and its preparation method", the disadvantage of this method is that the process is complicated, and titanium gypsum needs to be dried and calcined; "Method for preparing gypsum block by using titanium gypsum 》The disadvantage of this method is that the titanium gypsum should be dehydrated and dried

The discharge of titanium gypsum not only occupies a large amount of land and pollutes the environment, but also causes a great economic burden to titanium dioxide enterprises