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Nano ground calcium carbonate specially used for special cable

A heavy calcium carbonate, special cable technology, applied in inorganic pigment treatment, dyeing physical treatment, dyeing low molecular organic compound treatment, etc. performance requirements and other issues to achieve the effect of improving the use effect and avoiding the increase in particle size

Inactive Publication Date: 2019-11-22
宜兴市涂门纳米新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after modifying the surface of the calcium carbonate particles using a modifier, the particle size of the calcium carbonate particles will increase due to surface modification. When in use, the particle size of the heavy calcium carbonate particles will increase and the particle size distribution range will change Wide, does not meet the requirements for the use of heavy calcium carbonate as a filler for the performance of special cable products

Method used

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  • Nano ground calcium carbonate specially used for special cable
  • Nano ground calcium carbonate specially used for special cable
  • Nano ground calcium carbonate specially used for special cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A special nano heavy calcium carbonate for special cables, characterized in that the preparation method is as follows,

[0054] (1) Limestone pretreatment, put the limestone crushed material into a crushing device for crushing, the crushing time is 20-40min, after crushing, the limestone material becomes 30 mesh powder, and the limestone pretreatment is completed;

[0055] (2) beating, in parts by mass, 88 parts of limestone, 37 parts of water, and 7 parts of dispersant are fully mixed and stirred, the mixing speed is 100r / min, and the mixing time is 77min, and the mixing is completed to obtain a slurry;

[0056] (3) Grinding, the mixed slurry is wet-ground, the flow rate of the slurry is 6t / h, and a dispersant is added during the grinding process, the grinding temperature is 33°C, and the grinding time is 74min;

[0057] (4) Grinding for the second time, grind the slurry for the first time again, the flow rate of the slurry is 6t / h, and a dispersant is added during the...

Embodiment 2

[0092] Compared with embodiment 1, the differences of this embodiment are:

[0093] A special nano heavy calcium carbonate for special cables, characterized in that the preparation method is as follows,

[0094] (1) Limestone pretreatment, the limestone crushed material is placed in the crushing device for crushing, the crushing time is 20min, the limestone material after crushing becomes 20 mesh powder, and the limestone pretreatment is completed;

[0095] (2) beating, in parts by mass, 90 parts of limestone, 33 parts of water, and 6 parts of dispersant are fully mixed and stirred, the mixing speed is 100r / min, and the mixing time is 40min, and the mixing is completed to obtain a slurry;

[0096] (3) Grinding, the mixed slurry is wet-ground, the flow rate of the slurry is 6t / h, and a dispersant is added during the grinding process, the grinding temperature is 30°C, and the grinding time is 70min;

[0097] (4) Secondary grinding, grind the slurry for the first time again, the...

Embodiment 3

[0103] Compared with embodiment 1, the differences of this embodiment are:

[0104] A special nano heavy calcium carbonate for special cables, characterized in that the preparation method is as follows,

[0105] (1) Limestone pretreatment, the limestone crushed material is placed in the crushing device for crushing, the crushing time is 40min, the limestone material after crushing becomes 40 mesh powder, and the limestone pretreatment is completed;

[0106] (2) beating, in parts by mass, 85 parts of limestone, 40 parts of water, and 8 parts of dispersant are fully mixed and stirred, the mixing speed is 100r / min, and the mixing time is 80min, and the mixing is completed to obtain a slurry;

[0107] (3) Grinding, the mixed slurry is wet-ground, the flow rate of the slurry is 6t / h, and a dispersant is added during the grinding process, the grinding temperature is 45°C, and the grinding time is 80min;

[0108] (4) Grinding for the second time, grind the slurry for the first time ...

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Abstract

Nano ground calcium carbonate specially used for a special cable is provided. A preparation method comprises the following steps: limestone pretreating, pulping, grinding, secondary grinding, modification, and drying and grinding, with a dispersing agent being a sodium polyacrylate dispersing agent. Compared with the prior art, limestone pretreatment and two-time slurry grinding are carried out, facilitating subsequent effective modification of slurry through a cationic surfactant; and the fineness of the slurry meets the further requirements by adopting a drying and grinding mode finally in the processing process, so that the particle size of the ground calcium carbonate particles is prevented from being increased, the particle size distribution range is prevented from being widened, andthe use effect is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of calcium carbonate production, and in particular relates to a nano heavy calcium carbonate specially used for special cables. Background technique [0002] Calcium Carbonate (CaCO 3 ) is an inorganic compound, commonly known as limestone, limestone, stone powder, marble, etc. Calcium carbonate is neutral, basically insoluble in water, soluble in hydrochloric acid. It is one of the common substances on the earth. It exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of animal bones or shells. Calcium carbonate is also an important building material and is widely used in industry. [0003] Heavy calcium carbonate, referred to as heavy calcium, is ground from natural carbonate minerals such as calcite, marble, and limestone. It is a commonly used powdered inorganic filler, with high chemical purity, high inertness, not easy to chemical reactio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/04C09C3/08C09C3/10
CPCC09C1/021C09C3/006C09C3/041C09C3/043C09C3/08C09C3/10
Inventor 郑昌涂钢刘志宏涂学琴涂蒋云李小兵
Owner 宜兴市涂门纳米新材料有限公司
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