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Preparation method of glass ceramics based on modified wollastonite

A technology of glass-ceramics and wollastonite, which is applied in the field of preparation of glass-ceramics based on modified wollastonite, can solve problems such as poor material properties, achieve waste utilization, strong activity, and accelerate nucleation speed effect

Inactive Publication Date: 2018-11-06
合肥协耀玻璃制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing Chinese patent literature (publication number: CN103663964B) discloses a high-silicon jade-like glass-ceramic, which is a base material composed of the following components in percentage by weight: 75% silicon dioxide, 14%-15% aluminum oxide, oxidized Sodium 7%-8%, boron oxide 2%-4%, melted at 1600℃-1650℃ for 16h-24h to obtain glass liquid, and after making micropowder with particle size less than 200 mesh, put the micropowder into the mold for 8h-10h Raise the temperature to 1080℃~1120℃ and keep it warm for 1h~2h to make high-silicon jade-like glass-ceramics. The raw materials of the glass-ceramics are all basic materials, and the performance of the prepared material is not very good.

Method used

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  • Preparation method of glass ceramics based on modified wollastonite
  • Preparation method of glass ceramics based on modified wollastonite

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Embodiment 1

[0026] A kind of preparation method based on modified wollastonite glass-ceramics of the present embodiment, comprises the following steps:

[0027] Step 1: Weigh the following raw materials corresponding to the weight percentage for later use: 32% of flotation tailings of lead-zinc ore, 6% of oolitic chlorite, 3% of palm fiber, 26% of phillipsite, 14% of modified wollastonite, rare earth minerals 1%;

[0028] Step 2: Mix the raw materials in step 1 evenly and put them into a corundum crucible for smelting, then put them into a mold for casting, then anneal, and then cool to room temperature at 25°C / min to obtain the present invention. Modified wollastonite glass-ceramic.

[0029] The chemical composition weight percent content of the lead-zinc ore flotation tailings of the present embodiment is SiO 2 52%, Al 2 o 3 12%, MgO 1.2-2.2%, Fe 2 o 3 2%, CaO 0.5%, organic components 6%.

[0030] The palm fiber of the present embodiment is soaked in alkaline water with a mass ...

Embodiment 2

[0037] A kind of preparation method based on modified wollastonite glass-ceramics of the present embodiment, comprises the following steps:

[0038] Step 1. Weigh the following raw materials corresponding to the weight percentage for later use: 38% of flotation tailings of lead-zinc ore, 8% of oolitic chlorite, 5% of palm fiber, 30% of phillipsite, 20% of modified wollastonite, and rare earth minerals 3%;

[0039] Step 2: Mix the raw materials in step 1 evenly and put them into a corundum crucible for smelting, then put them into a mold for casting, then anneal, and then cool to room temperature at 35°C / min. Modified wollastonite glass-ceramic.

[0040] The chemical composition weight percent content of the lead-zinc ore flotation tailings of the present embodiment is SiO 2 58%, Al 2 o 3 18%, MgO 2.2%, Fe 2 o 3 6%, CaO 1.5%, organic components 10%.

[0041] The palm fiber in this embodiment is soaked in alkaline water with a mass concentration of 20% for 3 hours and t...

Embodiment 3

[0048] A kind of preparation method based on modified wollastonite glass-ceramics of the present embodiment, comprises the following steps:

[0049] Step 1. Weigh the following raw materials corresponding to the weight percentage for later use: 35% of flotation tailings of lead-zinc ore, 7% of oolitic chlorite, 4% of palm fiber, 27% of phillipsite, 17% of modified wollastonite, rare earth mineral 2%;

[0050] Step 2: Mix the raw materials in step 1 evenly and put them into a corundum crucible for smelting, then put them into a mold for casting, then anneal, and then cool to room temperature at 30°C / min to obtain the present invention. Modified wollastonite glass-ceramic.

[0051] The chemical composition weight percent content of the lead-zinc ore flotation tailings of the present embodiment is SiO 2 55%, Al 2 o 3 15%, MgO 1.7%, Fe 2 o 3 4%, CaO 1%, organic components 8%.

[0052] The palm fiber of this embodiment is that the mass concentration is 15% alkaline water so...

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Abstract

The invention discloses a preparation method of glass ceramics based on modified wollastonite. The method comprises the following steps that 1, raw materials of 32-38% by weight of lead zinc sulphidefloatation waste, 6-8% by weight of chamosite, 3-5% by weight of palm fibers, 26-30% by weight of phillipsite, 14-20% by weight of the modified wollastonite and 1-3% by weight of rare earth minerals are weighed for standby use; 2, the raw materials in the step 1 are evenly mixed, then sent into a corundum crucible for smelting, then sent into a mould for casting moulding, then subjected to annealing and then cooled at 25-35 DEG C / min to the room temperature, and thus the glass ceramics based on the modified wollastonite are obtained. According to the preparation method of the glass ceramics based on the modified wollastonite, the performance of the glass ceramics is perfected through further study, and the glass ceramics have higher use value and good application prospects.

Description

technical field [0001] The invention relates to the technical field of glass-ceramics preparation, in particular to a method for preparing glass-ceramics based on modified wollastonite. Background technique [0002] At present, glass-ceramics for construction are all sintered, and no crystal nucleating agent is added. Its basic principle is that glass is an amorphous solid. From a thermodynamic point of view, it is in a metastable state. High internal energy, so under certain conditions, it can be transformed into a crystalline state. From a kinetic point of view, the viscosity of the glass melt increases sharply during the cooling process, which inhibits the formation of crystal nuclei and crystal growth, preventing crystallization. The glass-ceramic used in construction utilizes the heterogeneous crystallization mechanism without adding crystal nucleating agents, and fully utilizes the possibility of thermodynamics and the suppression of kinetics. Under certain conditions,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03B19/02
CPCC03C10/0063C03B19/02
Inventor 魏芳芳
Owner 合肥协耀玻璃制品有限公司
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