Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A continuous fluidized calcination system and method for pearlescent materials

A pearlescent material and fluidization technology, applied in chemical instruments and methods, fibrous fillers, inorganic pigment processing, etc., can solve the problems of unstable quality control of pearlescent material calcination, affecting the quality of pearlescent materials, and reducing the moving speed of conveyor belts. , to achieve the effect of good calcination effect, fast and efficient calcination, and improved stability

Active Publication Date: 2021-11-09
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional calcination device for pearlescent material production is a roller kiln. The pearlescent material is sent to the heating furnace for calcination through the conveyor belt. The surface of the body can be completely reacted, but it is difficult to realize the full reaction of the powder inside the piled powder. This calcination method is very unstable and inefficient for the quality control of the pearlescent material calcination, which affects the product quality of the pearlescent material.
In addition, in order to prevent the powder from taking away heat, the moving speed of the conveyor belt must be reduced. Generally, the calcining time of pearlescent materials is as long as several hours, which greatly increases the power consumption and directly increases the calcining cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A continuous fluidized calcination system and method for pearlescent materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a system for continuous fluidized calcination process of pearlescent materials, the system includes a raw material bin 1, a hot blast stove 2, a rotary dryer 3, an elevator 4, a top bin 5, and a feeding screw 6 connected in sequence , feed valve 7, fluidized bed 8, primary cyclone separator 9, secondary cyclone separator 9-1, one-point return valve 10, two-point return valve 11, discharge valve 12, water-cooled screw 13, product Silo 14, bag filter 15, induced draft fan 16, chimney 17, air fan 18, natural gas fan 19, combustion chamber 20, water pump 21 and cooling tower 22;

[0030] In the system, the discharge port of the raw material bin 1 is connected with the feed port of the rotary dryer 3, the air inlet of the hot blast stove 2 is connected with the gas outlet of the natural gas blower 19 and the secondary cyclone separator 9-1, The air inlet of the rotary dryer 3 is connected to the gas outlet of the hot blast stove 2, the discharge p...

Embodiment 2

[0033] A method for the continuous fluidized calcination process of pearlescent materials, comprising the steps of:

[0034] 1) The pearlescent material precursor powder enters the rotary dryer 3 through the raw material bin 1 and enters the elevator 4, the top bin 5 and the feeding screw 6 in turn, and enters the fluidized bed 8 through the feeding valve 7; the fluidized bed 8 is discharged The powder entrained in the high-temperature exhaust gas is collected by the first-stage cyclone separator 9 and the second-stage cyclone separator 9-1, and then enters the fluidized bed 8 through the first-point return valve 10 and the second-point return valve 11; The material is discharged from the discharge port of the fluidized bed 8, enters the water-cooled screw 13 to cool through the discharge valve 12, and finally enters the product silo 14 for storage;

[0035] 2) The fluidization wind is produced by the combustion of natural gas and air in the combustion chamber 20, and the oxid...

Embodiment 3

[0040] Using the method described in Example 2, the silver-white series pearlescent material precursor powder with a water content of 5wt% enters the rotary dryer 3 through the raw material bin 1 and enters the elevator 4, the top bin 5 and the feeding screw 6 in turn, Enter the fluidized bed 8 through the feed valve 7; the fluidized air is produced by the combustion of natural gas and air in the combustion chamber 20, and the oxidative hot flue gas produced by the combustion enters the fluidized bed through the inlet of the fluidized bed 8 for Fluidization and calcination of the pearlescent material precursor in the fluidized bed, the calcination temperature is 550°C, and the calcination time is 60 minutes; after passing through the primary cyclone separator 9 and the secondary cyclone separator 9-1, it enters the hot blast furnace 2 for supplementary heat combustion , and then enter the rotary dryer 3 to dry the uncalcined pearlescent material precursor, then enter the bag fi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of calcination heat treatment of pearlescent materials, and specifically relates to a fluidized continuous calcination system and method for pearlescent materials. Fluidization technology is adopted, and a calcination process integration system with a fluidized bed reactor as the core is used to realize the calcination of pearlescent materials. Continuous calcination heat treatment. The invention has the advantages of high continuous production efficiency, good calcination effect, low production energy consumption, etc., is suitable for the industrial calcination process section of coated titanium-mica pearlescent materials, and has good economic and social benefits.

Description

technical field [0001] The invention belongs to the fields of pearlescent materials and chemical industry, and in particular relates to a system and method for a continuous fluidized calcining process of pearlescent materials. Background technique [0002] Pearlescent material is a new decorative material, which can show a soft, eye-catching, colorful pearlescent effect under the action of light, and is widely used in coatings, inks, cosmetics, plastics, rubber and printing industries. Mica titanium pearlescent material is one of the most representative ones. It is formed by coating one or more layers of titanium or other metal oxides on the surface of the sheet-like substrate through a chemical coating process with a sheet-like mica substrate as the core. Micronized. [0003] Calcination heat treatment of pearlescent material precursor is an important process step in the production of mica titanium pearlescent pigments. The pearlescent material produced by the existing li...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09C3/04C09C1/00
CPCC09C1/0015C09C3/043
Inventor 吕鹏鹏吴昌梓朱庆山邵国强吴昌锦吴昌在吴万里吴昊吴俊吴万琛
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com