Demolition Robot Application in Ball Mills of Cement Industry
Ball mill is a key equipment for grinding materials in the cement, silicate product, new building material, refractory, fertilizer, black and non-ferrous metal ore beneficiation and glass ceramic production industries. In construction and mining industries, the ball mill consists of main parts: feeding part, discharging part, turning part and driving part.
The turning part which is the core part of the ball mill mostly consists of metallic alloy metal liners and lifters with their sizes and shapes designed especially for grinding applications together with plates and bars made of high chromium alloys or manganese series steels as per international specifications. These parts rotate together with the drum body and are responsible for raising the materials and providing good grinding results.
The main technical specifications of the ball mill include processing capacity, mill diameter, length and power of the lab ball mill machine. As the first choice of many cement enterprises for the pre-grinding of raw materials and the grinding of clinker, the cement ball mill has many significant differences from other ball mills in terms of structure and performance. The cement ball mill has a small diameter and a large length barrel relative to its diameter. There are various types of balls with different diameters inside the mill. On the inner wall of the barrel, there are lining plates with different shapes. These complex structures help to improve the grinding effect.
The operating principle of the ball mill is relatively simple while its performance is very complicated. The factors that influence the operating efficiency mainly include the filling ratio of steel balls, the size of balls, the ratio of large, medium and small balls, the speed of the mill, the viscosity of the material, the temperature of the material, the particle size of the feed, the intensity of the material and so on. The grinding effect of the ball mill depends on the friction and impact of the steel balls or ore particles in the mill, that is, the energy transfer generated when the particles collide with each other. Therefore, the ball mill can not only grind materials well, but also homogenize and blend them.
Ball mill is one of the key equipment in cement industry for crushing and milling cement raw materials. The internal lining of ball mill is easily damaged during long-term operation, so demolition and replacement of ball mill internal lining is required regularly. However, the working environment inside the ball mill is harsh, with high temperature, dust and confined space, which brings great difficulties and dangers to the demolition operation.
Demolition robot is a perfect solution to solve the problems of ball mill internal demolition thanks to the following advantages:
Remote control operation: Operators can control the demolition robot outside the ball mill, which ensures the safety of operators and reduces damages.
Hydraulic breaker: The hydraulic breaker equipped on the demolition robot has strong impact force to break hard materials like refractory bricks and concrete in the ball mill.
Small size & High flexibility: The compact structure of demolition robot allows it to access to the confined space inside the ball mill. It is flexible to operate in narrow space.
Dust-proof design: The electric motors and hydraulic components of demolition robot have dust-proof protection, which enables long working lives in the harsh and dusty environment inside ball mills.
Environmental friendly: The demolition robot is powered by 380V electricity with no emissions, so it is energy efficient and eco-friendly.
Demolition robots have been extensively applied in ball mill internal demolition in cement industry. The main applications are:
The application of demolition robots greatly improves the efficiency and safety of ball mill internal demolition in cement industry. Demolition robots provide an optimal solution to the problems like high temperature, dust pollution and space limitation inside ball mills with remote operation, hydraulic breaker, compact structure and dust-proof design.
