Method and device for overflowing and sampling material in aluminum oxide production process

Abstract

The invention discloses a method and a device for overflowing and sampling a material in an aluminum oxide production process. In the method, the material is led into a buffer tank and then is sampled from an outlet of an overflow pipe of the buffer tank. The device comprises the buffer tank (1); the buffer tank (1) is connected with a material main pipe (3) through a sampling pipe (8) and a valve (2); the overflow pipe (4) is arranged on the side wall of the upper part of the buffer tank (1); and the material is sampled from the outlet of the overflow pipe (4). In the method and the device, the buffer tank is adopted, and the material is sampled from the outlet of the overflow pipe of the buffer tank, so that the influence of the last material on the sampling can be eliminated, the material is hardly splashed out of a sampling cup and the damage to a sampling person is avoided. Moreover, an open hopper is arranged under an overflow port, so that the material flowing from the overflow port or the waste material obtained after the test can flow into a sidebilge or is returned to the process through the open hopper, and the pollution to the environment of workshops and loss of production materials are reduced.

Description

technical field [0001] The invention relates to a sampling method and device, in particular to a method and device for sampling overflow of materials in the alumina production process. Background technique [0002] In the alumina wet production process, in order to understand the various indicators of the materials in the production process in a timely manner, so as to adjust the corresponding production links, the production unit needs to frequently sample and test various materials. The current sampling method is: a sampling tube with a valve with a smaller diameter is implanted on the material main pipe to be sampled, and the sampling is completed by opening and closing the valve. This sampling method has the following disadvantages: one is that the material in the material main pipe has strong corrosiveness, and has a higher temperature and a certain pressure, and the material flow rate in the pipe is faster, and the material is more likely to splash out of the sampling ...

AI Technical Summary

Problems solved by technology

This sampling method has the following disadvantages: one is that the material in the material main pipe has strong corrosiveness, and has a higher temperature and a certain pressure, and the material flow rate in the pipe is faster, and the material is more likely to splash out of the sampling cup during sampling. dangerous work

Second, the material sampled last time will remain in the sampling tube, which will affect the accuracy of the next sampling result

The third is that it is inconvenient for the sampling waste to enter the sewage ditch or return to the process, causing environmental pollution in the workshop and loss of production materials

Images