Aluminum melting method with petroleum coke as fuel and petroleum coke aluminum melting furnace

Abstract

The invention discloses an aluminum melting method with petroleum coke as fuel and a petroleum coke aluminum melting furnace. In the method, petroleum coke powder is used as the fuel, is pulverized under the pneumatic action of hot air flow, and is jetted into a melting furnace main body together with the hot air flow for combustion, so as to melt aluminum fed from a feeding passage at the upper part of the melting furnace main body; petroleum coke particles are wrapped by high-temperature combustion air and are suspended in high-temperature flames for surface combustion and permeable combustion until being burned out; air is heated by residual heat at the periphery of the melting furnace main body to form the hot air flow, and the hot air flow becomes the high-temperature combustion air. The petroleum coke aluminum melting furnace comprises the melting furnace main body, the feeding passage, a chimney, a heat insulating cylinder, a jetting device, a heat exchanger, an air inlet, a blast blower and a petroleum coke powder conveying device. The invention has the benefits that: the invention finds the cheap fuel for melting the aluminum by adopting the petroleum coke powder as the fuel to melt the aluminum, which not only is beneficial for reducing the cost of aluminum materials, but also creates a new way for the application of the fuel-grade petroleum coke.

Description

technical field

[0001] The invention relates to aluminum melting technology, in particular to a method for melting aluminum with petroleum coke and a furnace for melting aluminum with petroleum coke. Background technique

[0002] Petroleum coke components are hydrocarbons, which can be divided into needle coke, sponge coke, shot coke and powder coke in terms of structure and appearance. Under natural drying, the moisture content is less than 3%, the ash content is less than 1.12%, the calorific value is more than 30.35MJ / kg (8000-8500kCal / kg), the volatile matter is 11.03%, and the Hastelloy Grindability Index (HGI) is 80. The appearance and physical form of petroleum coke are similar to coal. Compared with coal, qualified products generally have the characteristics of high carbon content, high calorific value, low volatile matter, low ash content, and low water content. With the heavy and inferior crude oil in the world and the development of deep processing of crude oil, ...

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