Nano calcium carbonate high pressure saponification wet activation method

A nano-calcium carbonate and saponification technology, which is applied in the direction of calcium carbonate/strontium/barium, chemical instruments and methods, nanotechnology, etc., can solve the problems of uneven dispersion of medicines, poor absorption of medicines, large dosage of medicines, etc., and achieve favorable The effect of particle size refinement, uniform adsorption, and lower oil absorption value

Active Publication Date: 2018-06-26
FUJIAN HONGFENG NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wet activation also has disadvantages such as large amount of chemical agent, uneven dispersion of chemical agent, poor chemical absorption, and poor activation rate.

Method used

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  • Nano calcium carbonate high pressure saponification wet activation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The method of nano-calcium carbonate high-pressure saponification wet activation uses the following activation device: as figure 1 As shown, it includes a saponification reactor 1, a saponification stirring device 2, a saponification discharge pipe 4, an activation kettle 5, a spiral nozzle 6, an activation stirring device, an emulsifier 12, a circulation pipe 16 and a steam heating device. The saponification stirring device 2 is arranged in the saponification reactor 1 and is connected with the motor A3. The saponification reactor 1 is provided with a feed port 17, a pressure sensor 19 and a temperature sensor 20. The bottom of the saponification reactor 1 is connected to the saponification discharge. The pipes 4 are connected; the spiral nozzle 6 and the activation stirring device are all arranged in the activation kettle 5 , the inner wall of the activation kettle 5 is provided with a baffle 18 , and the spiral nozzle 6 is connected with the saponification discharge p...

Embodiment 2

[0024] The activation device used is the same as in Example 1.

[0025] The specific operation steps are as follows:

[0026] ① Preparation of activator: Add palmitic acid, potassium hydroxide, titanate coupling agent NDZ-401 and hot water at a temperature of 85 to 95°C into the saponification reaction kettle. The weight ratio of ester coupling agent NDZ-401 and hot water is 25:4.5:10.5:425, the saponification stirring device is turned on for stirring, steam is introduced into the saponification reaction kettle, and the pressure in the reaction kettle reaches 0.45-0.5MPa , keep the pressure and continue to stir for 15 minutes to prepare the activator for subsequent use;

[0027] ② Feeding of nano-calcium carbonate: pump the cooked slurry of nano-calcium carbonate into the activation kettle, measure the concentration and volume of calcium carbonate in the activation kettle, calculate the solid content of nano-calcium carbonate, turn on the activation stirring device for contin...

Embodiment 3

[0030] The activation device used is the same as in Example 1.

[0031] The specific operation steps are as follows:

[0032] ① Preparation of activator: Add palmitic acid, potassium hydroxide, titanate coupling agent NDZ-401 and hot water at a temperature of 85 to 95°C into the saponification reaction kettle. The weight ratio of ester coupling agent NDZ-401 and hot water is 25:4:10:400, the saponification stirring device is turned on for stirring, steam is passed into the saponification reaction kettle, and the pressure in the reaction kettle reaches 0.45-0.5MPa , keep the pressure and continue to stir for 13 minutes to prepare the activator for subsequent use;

[0033]② Feeding of nano-calcium carbonate: pump the cooked slurry of nano-calcium carbonate into the activation kettle, measure the concentration and volume of calcium carbonate in the activation kettle, calculate the solid content of nano-calcium carbonate, turn on the activation stirring device for continuous stir...

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Abstract

The invention discloses a method for activating nano calcium carbonate through a high-pressure saponification wet method. According to the method, the following activating devices of a saponification reaction kettle, a saponification stirring device, a saponification discharge pipe, an activating kettle, a spiral nozzle, an activating and stirring device, an emulsifying machine, a circulating pipe and a steam heating device are utilized. The method comprises the specific operation steps: 1, preparing activating agent; 2, feeding nano calcium carbonate; 3, activating the nano calcium carbonate. When the method disclosed by the invention is applied to activating the nano calcium carbonate, particle size refining and medicament dispersion and absorption are facilitated; furthermore, blistering overflow is avoided, an oil absorption value of a nano calcium carbonate product is obviously reduced, and activating rate is 99% or more.

Description

technical field [0001] The invention relates to the technical field of nano-calcium carbonate production, in particular to a method for high-pressure saponification and wet-activation of nano-calcium carbonate. Background technique [0002] Calcium carbonate includes: heavy calcium carbonate, light calcium carbonate, nano-calcium carbonate, etc. In order to improve performance, activation is usually required. Activation is also called surface treatment or modification treatment. It is called coating abroad, which means coating on the outside of particles. A layer of surface treatment agent, the activation modification of calcium carbonate is divided into dry activation and wet activation. The wet activation process is to add an active agent to the calcium carbonate slurry for surface treatment and coating, and then perform drying, crushing and other processes. [0003] Nano-calcium carbonate is a new type of ultra-fine solid powder material developed in the 1980s, with a pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/18C09C1/02C09C3/10B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01F11/185C09C1/021C09C3/10
Inventor 邹林富刘亚雄雷水根
Owner FUJIAN HONGFENG NANO TECH
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