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

Preparation method of quartz lead

A technology of quartz ingot and quartz sand, which is applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problems of endangering the health of employees, increasing the amount of material burning loss, environmental dust pollution, etc., and achieves regular shapes and specifications, Reduce labor intensity and save energy

Active Publication Date: 2019-01-08
江苏亨芯石英科技有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plasma-made mounds, although the hydroxyl content is low and the quality is high, the production cost is very high
These two methods of making mounds will increase the amount of material burning during the production process, and will cause dust pollution to the environment and endanger the health of employees.

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
  • Preparation method of quartz lead
  • Preparation method of quartz lead

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Prepare a quartz ingot with a diameter of 300mm and a height of 400mm. Considering the amount of burning loss, throw 64-66Kg of quartz sand into the cleaned furnace, seal and vacuumize to 6×10 -3 Pa~8×10 -5 Pa, then fill the protective gas nitrogen or argon, make the pressure in the furnace lower than -0.05MPa, start heating the furnace, from room temperature to 1000°C-1300°C, keep warm for 2-3 hours (the best holding time is 3 hours ), continue to heat up to 1500°C-1550°C, keep warm for 2-3 hours (in order to remove the gas, the holding time is 3 hours), then raise the temperature to 2100°C-2300°C and keep warm for 10-20 hours (the best holding time is 12h ), to ensure that the quartz sand in the furnace is completely melted. After complete melting, cool down to 1700-2000°C at a rate of 50-100°C / h, pressurize mechanically at 10MPa for 3-8 hours, then cool down to 950-1200°C at 30-60°C / h and keep warm for 1-3 hours , Under dry protective gas conditions, it can be anne...

Embodiment 2

[0040] Prepare a quartz ingot with a diameter of 300mm and a height of 400mm. Considering the amount of burning loss, throw 64-66Kg of quartz sand into the cleaned furnace, seal and vacuumize to 6×10 -3 Pa~8×10 -5 Pa, then fill the protective gas nitrogen or argon, make the pressure in the furnace lower than -0.05MPa, start heating the furnace, from room temperature to 1000°C-1300°C, keep warm for 2-3 hours (the best holding time is 3 hours ), continue to heat up to 1500°C-1550°C, keep warm for 2-3 hours (in order to remove the gas, the holding time is 3 hours), then raise the temperature to 2100°C-2300°C and keep warm for 10-20 hours (the best holding time is 12h ), to ensure that the quartz sand in the furnace is completely melted. After complete melting, cool down to 1700-2000°C at a rate of 50-100°C / h, pressurize at 15MPa for 3-8 hours, then cool down to 950-1200°C at 30-60°C / h and keep warm for 1-3 Hours, under the condition of dry protective gas, it can anneal and remo...

Embodiment 3

[0043] Prepare a quartz ingot with a diameter of 300mm and a height of 400mm. Considering the amount of burning loss, throw 64-66Kg of quartz sand into the cleaned furnace, seal and vacuumize to 6×10 -3 Pa~8×10 -5Pa, then fill the protective gas nitrogen or argon, make the pressure in the furnace lower than -0.05MPa, start heating the furnace, from room temperature to 1000°C-1300°C, keep warm for 2-3 hours (the best holding time is 3 hours ), continue to heat up to 1500°C-1550°C, keep warm for 2-3 hours (in order to remove the gas, the holding time is 3 hours), then raise the temperature to 2100°C-2300°C and keep warm for 10-20 hours (the best holding time is 12h ), to ensure that the quartz sand in the furnace is completely melted. After complete melting, cool down to 1700-2000°C at a rate of 50-100°C / h, pressurize at 25MPa for 3-8 hours, then cool down to 950-1200°C at 30-60°C / h and keep warm for 1-3 Hours (temperature controlled at 1030°C), annealing under dry protective ...

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 discloses a preparation method of quartz lead. The preparation method comprises the following steps: heating and melting quartz sand into a melt and sintering the melt by adopting a vacuum hot pressing sintering method to obtain the quartz lead. The preparation method of the quartz lead, disclosed by the invention, is high in safety and cannot cause the pollution to an environment. The prepared quartz lead is high in purity, low in hydroxyl content, high in softening point, high in strength and high in temperature resistance and provides a possibility for later preparation of other high-quality quartz products.

Description

technical field [0001] The invention relates to the technical field of preparation technology of quartz products, in particular to a preparation method of quartz ingots. Background technique [0002] Nowadays, the demand for high-end quartz products in the optical communication and semiconductor industries continues to grow, and at the same time, the requirements for the production process of quartz products are also gradually increasing. The process methods for preparing quartz products include electric continuous melting, two-step method, and synthetic method. The more cost-effective method is electric continuous melting, but the quality of quartz products prepared by this process is relatively low, with high impurity content and many other defects such as bubbles. The two-step method makes quartz ingots to be processed into quartz products for the second time. The advantage of this method is that the production process is flexible. The process of making ingots mainly in...

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 Applications(China)
IPC IPC(8): C03C3/06C03B20/00
CPCC03B20/00C03C3/06
Inventor 张玉严继木张义德
Owner 江苏亨芯石英科技有限公司
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