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Preparation method of bentonite for drilling mud and device thereof

A technology for drilling mud and preparation equipment, applied in chemical instruments and methods, drilling compositions, inorganic chemistry, etc., can solve the problems of cumbersome sodium ion adjustment steps, unstable product quality, poor modification effect, etc., to achieve The effect of thickening is better, it is conducive to drying, and the effect of stable product quality

Active Publication Date: 2016-03-02
中国非金属矿工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the preparation method is effective, it is cumbersome to adjust the sodium ion step, and the process is discontinuous, so the operability of actual industrial production is not strong.
[0006] In addition, in the preparation process of existing bentonite for drilling mud, a planetary wheel mill or a twin-screw extruder is used for mixing and modification. Because most of the screw pitches are equal, the feed is easy to accumulate, and it may be difficult to extrude or the extrusion force is not enough due to improper water addition during the process, resulting in unstable product quality

Method used

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  • Preparation method of bentonite for drilling mud and device thereof
  • Preparation method of bentonite for drilling mud and device thereof
  • Preparation method of bentonite for drilling mud and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A method for preparing bentonite for drilling mud and a preparation device thereof, comprising the following steps and a device for realizing the steps:

[0043] 1. Dry and remove impurities. The calcium-based bentonite raw ore is placed in the cement drying yard for drying. During the drying process, manual selection and removal of impurities is carried out. After drying, the moisture content of the material is ≤ 20%, and the material is put into the fixed hopper 1 through the loading vehicle.

[0044] 2. Crushing and screening. After drying, the material is transported to the crusher 2 through the first belt conveyor 7a, and the crushed material is transported to the screening machine 3 through the second belt conveyor 7b for screening. The material with a particle size of less than 10mm enters the mixing and grinding process. Materials with a size of 10-25mm are returned for re-crushing or used in the production of other common products, and impurities with a partic...

Embodiment 2

[0048] A method for preparing bentonite for drilling mud and a preparation device thereof, comprising the following steps and a device for realizing the steps:

[0049] 1. Dry and remove impurities. The calcium-based bentonite raw ore is placed in the cement drying yard for drying. During the drying process, manual selection and removal of impurities is carried out. After drying, the moisture content of the material is ≤ 20%, and the material is put into the fixed hopper 1 through the loading vehicle.

[0050] 2. Crushing and screening. After drying, the material is transported to the crusher 2 through the first belt conveyor 7a, and the crushed material is transported to the screening machine 3 through the second belt conveyor 7b for screening. The material with a particle size of less than 10mm enters the mixing and grinding process. Materials with a size of 10-25mm are returned for re-crushing or used in the production of other common products, and impurities with a partic...

Embodiment 3

[0054] A method for preparing bentonite for drilling mud and a preparation device thereof, comprising the following steps and a device for realizing the steps:

[0055] 1. Dry and remove impurities. The calcium-based bentonite raw ore is placed in the cement drying yard for drying. During the drying process, manual selection and removal of impurities is carried out. After drying, the moisture content of the material is ≤ 20%, and the material is put into the fixed hopper 1 through the loading vehicle.

[0056] 2. Crushing and screening. After drying, the material is transported to the crusher 2 through the first belt conveyor 7a, and the crushed material is transported to the screening machine 3 through the second belt conveyor 7b for screening. The material with a particle size of less than 10mm enters the mixing and grinding process. Materials with a size of 10-25mm are returned for re-crushing or used in the production of other common products, and impurities with a partic...

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Abstract

The invention discloses a preparation method of bentonite for drilling mud and a device thereof. The preparation method comprises the following steps: crushing calcium bentonite raw ore and screening, conveying the crushed and screened calcium bentonite raw ore into a kolleroang to be fully mixed and ground together with a sodium modification agent, an auxiliary additive and water, carrying out extrusion modification by conveying the above mixture into a trans-variable-pitch screw extruder, extruding by masking to obtain a semi-finished product, airing, milling and packaging to obtain a bentonite finished product for drilling mud. According to the invention, trona is used as the sodium modifier, and the trans-variable-pitch screw extruder is adopted for modification. The materials are spirally pushed forward by two variable-pitch propellers, and extrusion force is gradually enhanced. Production problems such as material stacking and insufficient extrusion force are effectively solved. The modification effect is good, and product quality is stable. In addition, preparation cost is greatly reduced, and production cost can be saved by 60,000-70,000 yuan for each ton of the product.

Description

technical field [0001] The invention relates to a bentonite preparation method and a device thereof, in particular to a bentonite preparation method and a device for drilling mud. Background technique [0002] The main component of bentonite is montmorillonite, which has a sandwich structure composed of silicon-oxygen tetrahedron and aluminum-oxygen octahedron, and belongs to the monoclinic crystal system. Due to this specific layered structure, it has a large specific surface area, so it has strong adsorption. At the same time, due to the hydrophilic group OH 一 It has excellent dispersion, suspension and cohesiveness in aqueous solution, and exhibits excellent thixotropy in a certain concentration range, that is, when there is external stirring, the suspension appears as a sol with good fluidity , After the stirring is stopped, it will automatically arrange into a three-dimensional network structure gel without sedimentation and water separation. This characteristic is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40C09K8/03C09K8/14
Inventor 王鸽亓丰源谢爱虎徐光亮王典
Owner 中国非金属矿工业有限公司
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