Vertical mill system and method for producing oil well cement

Abstract

The invention provides a vertical mill system and a method for producing oil well cement. The vertical mill system comprises a motor, a speed reducer, a rack, a vertical mill shell, an air ring, a grinding disc, a grinding roller, a powder selecting machine, an air outlet, a discharging pipe, a pressurizing device, a rocker arm, a mill inlet air pipe and the like; the vertical mill shell is arranged on the rack and arranged on the upper part of the grinding disc; the grinding disc is arranged at the bottom of the vertical mill shell and above the speed reducer; the grinding roller is arrangedon the side surface of the grinding disc through the rocker arm; the powder selecting machine is arranged at the top of the vertical mill shell; the motor and the speed reducer are connected with thegrinding disc through a transmission mechanism; the discharging pipe is located on one side of the vertical mill shell; and the mill inlet air pipe is located at the joint of the grinding disc and thevertical mill shell. According to a vertical mill for producing the cement, the high-performance G-grade HSR type oil well cement can be produced, and the quality requirements of oil and gas field cementing for cement are met.

Description

technical field [0001] The invention relates to a vertical mill system, more specifically to a G-level HSR oil well cement vertical mill system and a method for producing oil well cement. Background technique [0002] With the continuous development of cement production technology and the increasing size of the cement industry, vertical mills are widely used in the cement industry. Compared with the ball mill, the vertical mill has the advantages of high grinding efficiency, low power consumption, large drying capacity, large particle size of the materials allowed to enter the mill, simple grinding process, small floor space, and easy operation. Whether it is a system or a stand-alone Compared with the ball mill, the weight is small, which can save a lot of materials. However, the vertical mill also has certain limitations, mainly because the use of the vertical mill in the production of cement will change the characteristics of the cement, such as narrowing the particle si...

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Problems solved by technology

However, the oil well cement used to strengthen oil wells and gas wells has strict requirements on cement performance, and the oil well cement produced by the existing vertical mill process system cannot meet the use requirements of oil field cementing.

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