Production technique for preparing architectural ornament phosphorus slag cast stone by employing high-temperature phosphorus slag liquid

Abstract

The invention relates to a production process for preparing phosphorus slag cast stone for architectural decoration. The production process of using high-temperature phosphorus slag liquid to prepare phosphorus slag cast stone for architectural decoration is characterized in that it includes the following steps: (1) preparation and preheating of auxiliary raw materials: using quartz sand and kaolin as auxiliary raw materials, preheating to 1300 ~ 1450°C; (2) Hot batching: the phosphorus slag liquid above 1350°C discharged from the phosphorus smelting electric furnace flows into the kiln through the liquid flow tank, and the auxiliary raw materials are synchronously put into the pool kiln. Among them, the mass ratio of the phosphorus slag liquid to the auxiliary raw materials 65~75:25~35; (3) mixed melting: the mixed melting temperature of phosphorus slag liquid and auxiliary raw materials in the tank kiln is 1450~1580 °C; (4) molding; (5) crystallization and annealing: at 1000 Crystallization treatment at ~1150°C for 60-120 minutes, then annealing and cooling to room temperature to obtain the product. The invention can effectively utilize the heat energy of the high-temperature phosphorus slag liquid, realize the direct recycling of the phosphorus slag liquid, reduce the energy consumption and production cost of cast stone production, and make the phosphorus slag cast stone suitable for large-scale architectural decoration.

Description

technical field [0001] The invention relates to a production process for preparing phosphorous slag cast stone for architectural decoration by utilizing high-temperature phosphorus slag liquid, and the phosphorous slag cast stone product is mainly used in the field of architectural decoration. Background technique [0002] Using phosphate rock as raw material, yellow phosphorus is produced by electric furnace method, and CaO and SiO are discharged 2 The high-temperature melt whose main component is above 1350°C is the high-temperature phosphorus slag liquid. If the high-temperature phosphorus slag liquid is cooled by water quenching to form slag, it is phosphorus slag, which is a kind of industrial solid waste. Usually, for every 1t of yellow phosphorus produced, 8-10t of phosphorus slag will be discharged. The current phosphorous slag recycling technology in my country is mainly to use water-quenched phosphorus slag to produce cement, and its dosage is usually not higher ...

AI Technical Summary

Problems solved by technology

[0004] The current phosphorus slag recycling technology mainly uses quenched phosphorus slag, which has the disadvantage that the heat energy of the high-temperature phosphorus slag liquid cannot be used. At the same time, the preparation of active cast stone products mainly uses raw materials for batching and melting, and there is a problem of heating and melting Excessive energy consumption, high production cost, and not being suitable for large-scale use as architectural decoration materials, the purpose of the present invention is to provide a production process for preparing phosphorus slag cast stone for architectural decoration by using high-temperature phosphorus slag liquid. Using high-temperature phosphorus slag liquid to prepare phosphorous slag cast stone for architectural decoration, effectively utilizing the heat energy of high-temperature phosphorus slag liquid, realizing direct resource utilization of phosphorus slag liquid, and reducing energy consumption and production cost of cast stone production

Images