Artificially synthesized tetragonal system petalite and manufacturing method thereof

A technology of permeable feldspar and tetragonal crystal system is applied in the field of artificial synthesis of permeable feldspar of tetragonal crystal system and its manufacture, which can solve the large fluctuation of the price of chemical lithium salt and the inability of unilateral formability to meet the large-scale production of daily heat-resistant ceramics requirements and other issues, to achieve the effect of breaking through resource bottleneck constraints, broadening supply sources and improving quality

Pending Publication Date: 2021-02-12
黄新开
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It should also be pointed out here that the product of the above-mentioned patented formula is a solid-liquid two-phase sintered body. As a barren material, its unilateral molding performance obviously cannot meet the requirements of large-scale production of daily-use heat-resistant ceramics.
In addition, the above patent formula is based on the introduction of full chemical lithium salt to synthesize low expansion materials
In recent years, the price of chemical lithium salt has fluctuated greatly, which has also brought insurmountable economic and technical obstacles to the implementation of this technical plan.

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
  • Artificially synthesized tetragonal system petalite and manufacturing method thereof
  • Artificially synthesized tetragonal system petalite and manufacturing method thereof
  • Artificially synthesized tetragonal system petalite and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]According to the measurement requirements for the chemical components of artificial synthetic penetrating feldspar, set the feed amount of the base material formula to 100%, adopt the dry processing process, and weigh and feed as follows:

[0035]Weigh 54.0% of 1200 mesh commercial silicon powder, 35% of ultra-fine kaolin powder, 3% of industrial lithium carbonate powder, 4% of lithium fluoride, 1% of barium fluoride and 3% of lithium feldspar fine powder (as an additional amount ), put into the screw mixer to stir the mixture.

[0036]Weigh 3% anhydrous lithium chloride and prepare a 50% solution. Spray the dry powder while stirring in the way of atomization spraying until the lithium chloride solution is completely added to the powder and make The powder is evenly wetted.

[0037]The stirred wet material is trapped for 24 hours and enters the press forming process.

[0038]The above green powder is pressed into a round bar or square green body with a length of 3 to 5 cm. The formed blan...

Embodiment 2

[0041]According to the measurement requirements of the chemical components of artificial synthetic penetrating feldspar, set the dosage of the base material formula to 100%, and adopt the wet processing technology, and operate in sequence according to the following steps.

[0042]One stage feeding: weigh 55.0% of quartz sand, according to the material: ball: water-1:1.5:0.5 into the ball mill, ball mill for 48 hours.

[0043]Feeding in the second stage: weigh 37% of kaolin concentrate (measured by dry weight), weigh 8% of lithium fluoride, weigh 3% of lithospere ore fine sand (additional amount), and 80% of the second stage feed Add water and continue grinding for 12 hours. Unload the slurry after grinding in place.

[0044]Referring to Example 1, continue to complete the subsequent process flow: mud squeezing, drying, crushing, green compact powder preparation, press forming, roasting, and clinker crushing until the finished product is put into storage.

[0045]Since the formulation of this ex...

Embodiment 3

[0048]According to the measurement requirements for the chemical components of artificial synthetic penetrating feldspar, set the feed amount of the base material formula to 100%, adopt the dry processing process, and weigh and feed as follows:

[0049]Weigh 34.0% of 1200 mesh commercial silicon micropowder, 61.0% of 6.0 grade spodumene ultrafine powder, 2% of magnesium fluoride, and 2% of spodumene fine powder (additional amount), and put them into a screw mixer for mixing. Weigh 3% lithium chloride and prepare a 40% lithium salt solution for later use. Refer to Example 1, continue to complete the subsequent solution spraying, blank powder homogenization, compression molding, kiln roasting (firing temperature 1340°C, holding at 1290°C for 2 hours), clinker crushing, and finished product classification.

[0050]The expansion coefficient of the sample of Example 3 was tested, and the results were as followsFigure 4 Shown.

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

PropertyMeasurementUnit
Coefficient of expansionaaaaaaaaaa
Coefficient of expansionaaaaaaaaaa
Login to view more

Abstract

The invention relates to a manufacturing technology for artificially synthesizing tetragonal system petalite, in particular to a technical scheme for synthesizing specific silicate mineral crystals bytaking rich silicate minerals, chemical raw materials and the like as component raw materials, referring to a natural petalite chemical metering value range and referring to a ceramic production process flow and a technical means. The synthetic product tetragonal system petalite is an isomer of monoclinic system natural petalite, and the product is superior to the natural petalite in the aspectsof lithium-containing grade, thermal negative expansion performance, material purity and the like. Meanwhile, the production and manufacturing cost is lower than the market price of imported petalite,and the method has positive and far-reaching significance in breaking through the bottleneck constraint of natural petalite resources, broadening the supply source of heat-resistant ceramic raw materials and improving the quality of daily heat-resistant ceramic products.

Description

Technical field[0001]The invention belongs to the field of artificial synthesis and manufacturing of ceramic materials, and specifically relates to an artificially synthesized tetragonal tetragonal lapholite and a manufacturing method thereof.Background technique[0002]The special crystal structure of permeate feldspar gives it the material characteristics of negative expansion and near zero expansion in a specific temperature range (room temperature to 600°C) (the expansion coefficient at 600°C is α = 0.26×10-6 / ℃); while spodumene, which is also a lithium low-expansion mineral, can only characterize the material properties of positive expansion in the temperature range of room temperature to 600℃ (the expansion coefficient at 600℃ is α=1.28×10-6 / ℃). Due to the negative expansion and near-zero expansion material characteristics of laphurite, laphurite can produce sufficient grain boundary expansion difference between binary or multiple crystal phases in multiphase ceramics, which is ...

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
IPC IPC(8): C04B35/19C04B35/622
CPCC04B35/19C04B35/622C04B2235/349C04B2235/442C04B2235/445
Inventor 黄新开
Owner 黄新开
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap