Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of method that takes xonotlite as raw material to prepare titanite

A technology of tombstone and sphene, applied in chemical instruments and methods, silicon compounds, inorganic chemistry, etc., can solve the problems of cumbersome liquid phase synthesis process, high calcination temperature of sphene, incomplete reaction, etc., and achieve ideal purity. , Low cost of raw materials, and the effect of solving the problem of easy yellowing

Active Publication Date: 2020-09-15
JILIN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of high calcination temperature and incomplete reaction of high-temperature solid-phase synthesis of titanite, as well as technical deficiencies such as cumbersome liquid-phase synthesis process and high production cost, to provide a kind of simple process, low production cost, low calcination temperature, sphene Synthetic method of high purity stone product

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 kind of method that takes xonotlite as raw material to prepare titanite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 1.2g of titanium sulfate solid particles and dissolve in 50mL of distilled water to prepare a 0.1mol / L titanium sulfate solution, stir magnetically for 30min to fully dissolve, add dropwise 2mol / L sodium hydroxide solution to adjust pH=2. Weighed 0.6 g of xonotlite and added it to the solution, stirred evenly, then added dropwise sodium hydroxide solution to the mixed solution to adjust the pH of the system to 8, placed it in a water bath at 95° C. and heated and stirred for 6 hours. After the sample is cooled, it is centrifuged and washed 10 times with distilled water to fully wash off sulfate ions (barium chloride is detected until no precipitation is formed), and then the centrifuged solid is dried in an oven at 80°C, ground and placed in a muffle furnace Calcined at a temperature of 1000°C for 2 hours to obtain a pure-phase titanite product, no rutile phase was detected by XRD (see attached figure 1 ).

Embodiment 2

[0020] Take 170 mL of 0.03 mol / L titanyl sulfate solution, add dropwise 2 mol / L sodium hydroxide solution to adjust pH=2. Weighed 0.63 g of xonotlite and added it to the solution, stirred evenly, then added dropwise sodium hydroxide solution to the mixed solution to adjust the pH of the system to 6, placed it in a water bath and heated and stirred at 90°C for 8 hours. After the sample is cooled, it is centrifuged and washed 10 times with distilled water to fully wash off sulfate ions (barium chloride is detected until no precipitation is formed), and then the centrifuged solid is dried in an oven at 80°C, ground and placed in a muffle furnace Calcined at a temperature of 1050°C for 2 hours to obtain a pure-phase sphene product.

Embodiment 3

[0022]Take 10 mL of 0.5 mol / L titanyl sulfate solution, add dropwise 2 mol / L sodium hydroxide solution to adjust pH=3. Weighed 0.52 g of xonotlite and added it to the solution, stirred evenly, then added dropwise sodium hydroxide solution to the mixed solution to adjust the pH of the system to 7, placed it in a water bath, heated and stirred at 80°C for 8 hours. After the sample is cooled, it is centrifuged and washed 10 times with distilled water to fully wash off sulfate ions (barium chloride is detected until no precipitation is formed), and then the centrifuged solid is dried in an oven at 80°C, ground and placed in a muffle furnace Calcined at a temperature of 950°C for 2 hours, the obtained titanite product has no rutile phase TiO 2 .

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
densityaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing sphene from xonotlite and belongs to the field of production of inorganic nonmetallic materials. Sphene disclosed by the invention can serve as a glazeopacifier applied to the ceramic industry. By fully utilizing the same calcium-silicate ratio of xonotlite and sphene and the chemical activity of xonotlite, excess chemical energy in calcium-silicateraw material is introduced into titanium-bearing sulfate hydrolysate, so that sphene is produced at a low calcination temperature, and the purity of sphene in a product is ensured. The method has simple synthetic process, low raw material cost, low equipment requirement, low energy consumption and less pollution, and sphene prepared with the method is high in purity, can effectively solve the problem that current titanium system opacifier glaze is easy to yellow and high in cost and is an ideal substitute of a zirconium silicate opacifier.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic material production, and relates to a kind of xonotlite and TiO 2 The invention discloses a method for preparing titanite as a raw material, and the obtained titanite can be used as a glaze opacifying agent in the ceramic industry. Background technique [0002] In recent years, with the development of the ceramic industry, opacity glazes have been widely used in various aspects such as daily-use ceramics, artistic ceramics, architectural ceramics, and sanitary ware. Opacifying glaze, also known as "covered glaze", is to add an opacifying agent to the transparent glaze, so that fine crystals, air bubbles or melting phenomena will be produced in the glaze, which will scatter the light and obtain an opaque opaque glaze. , can cover up the color and defects of the green body. The opacifying agent is the most critical component in the opacifying glaze. In the ceramic industry, the opacifying age...

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): C01B33/20
CPCC01B33/20C01P2002/72C01P2006/80
Inventor 李芳菲郭宏刚薛兵蒋引珊夏茂盛巨昊霍明远徐远俊韩明磊任桂花
Owner JILIN UNIV