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Production process for converting gray black barite into white barite finished product

A production process and barite technology, applied in the direction of calcium/strontium/barium sulfate, etc., can solve problems such as inapplicability, limited application fields, and reduced density, and achieve low cost, simple and reliable process, and low energy consumption. Effect

Inactive Publication Date: 2012-01-04
卢长生
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of its black color, its application fields are limited, for example, it cannot be used as a filler in the paint and paper industry
In addition, the density of barite raw ore is also affected by carbon content, and its density decreases linearly with the increase of carbon content

Method used

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  • Production process for converting gray black barite into white barite finished product
  • Production process for converting gray black barite into white barite finished product

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0017] As shown in the accompanying drawings, the process flow of the present invention is: gray-black barite raw ore→crushing→roasting→milling→water washing→overflow liquid after the water washing→pickling→rinsing→filtering→drying→fine crushing→ Packaging → finished product; the washed underflow liquid → filtering → drying → crushing → packaging → finished product for drilling fluid.

[0018] As shown in the figure, in the "crushing" process, the particle size after crushing is 80mm; the roasting is weak reduction roasting at a temperature of 950°C; in the "milling" process, the raw materials are placed in Raymond Grinding in the mill, the fineness after grinding is 200 mesh; in the "washing" process, in the washing tank, the small particle size flows out through the overflow port at the upper part of the tank body, and the large particle size passes through the unde...

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Abstract

The invention discloses a production process for converting gray black barite into a white barite finished product. The process flow comprises: crushing black barite raw ore, roasting, grinding into powder, washing with water, pickling overflow liquid obtained after washing with water, rinsing, filtering, drying, finely breaking, packing and obtaining finished product, wherein the bottomflow liquid obtained after washing with water is filtered, the product obtained is dried and finely ground, and the ground product is packed and thus, the drilling fluid finished product is obtained. When the production process is used, gray black barite can be converted into white barite which can be directly used in paint making, coating, paper making and the like industries as a filler, the density of barite can be increased greatly, the corresponding indexes such as alkali metal content and viscous effect can be improved correspondingly, the prepared drilling fluid weighting agent can meet high-density and high-quality drilling fluid requirements, the application range of the gray black barite can be obviously expanded and the utilization value of the gray black barite can be increased.

Description

technical field [0001] The invention relates to a processing technology for gray-black barite, in particular to a production technology for converting gray-black barite into a finished white barite. Background technique [0002] Barite is a non-metallic mineral product mainly composed of barium sulfate (BaSO4), and is the most widely distributed barium-containing mineral in nature. Pure barite is white and shiny. During the formation of barite deposits, the ore body is gray-black due to the accompanying carbonaceous or organic humus, so it is called gray-black barite. Because of its black color, its application fields are limited, for example, it cannot be used as a filler in the paint and paper industries. In addition, the density of barite raw ore is also affected by the carbon content, and its density decreases linearly with the increase of carbon content. At present, with the increase of drilling depth and abnormally active drilling wells in high-pressure formations, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46
Inventor 卢长生
Owner 卢长生
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