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A method for preparing glass-ceramic by using yellow phosphorus slag and chromium slag

A technology for yellow phosphorus slag and glass-ceramics, which is applied in the field of solid waste recycling, can solve the problems of high energy consumption, high production cost, less slag consumption, etc., and achieves the effects of simple production process, excellent performance, and reduced addition amount.

Active Publication Date: 2018-10-23
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the increasingly serious environmental impact caused by the existing yellow phosphorus slag and chromium slag piles, the current methods are to use only one kind of waste slag as a resource, such as firing ceramics, glass, building materials, etc., and these methods are used in the traditional calcination process On the basis of raw materials, a large number of auxiliary raw materials are added, which has the disadvantages of high production cost, high energy consumption, and less slag consumption.

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  • A method for preparing glass-ceramic by using yellow phosphorus slag and chromium slag

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Embodiment 1

[0021] A method for preparing glass-ceramic by using yellow phosphorus slag and chromium slag described in this embodiment, the phosphorus slag produced when the yellow phosphorus is prepared by the electric furnace method and the chromium slag produced during the preparation process of the chromium salt sodium dichromate are the main raw materials , wherein the main components and mass percentage of yellow phosphorus slag are: SiO 2 37.28%, CaO46.08%, Al 2 o 3 3.22%, MgO2%; the main composition and mass percentage of chromium slag are: SiO 2 4.57%, Al 2 o 3 7.31%, CaO26.61%, MgO25.79%, Fe 2 o 3 11.55%, Cr 2 o 3 6.34%, the preparation process specifically includes the following steps:

[0022] (1) First crush the yellow phosphorus slag, chromium slag, quartz sand, fluorite, and coke, and screen the phosphorous slag, chromium slag, fluorite, and coke through a 40-mesh sieve. The particle size of the quartz sand is 60 mesh, and two The content of silicon oxide is 97%. W...

Embodiment 2

[0028] A method for preparing glass-ceramic by using yellow phosphorus slag and chromium slag described in this embodiment, the phosphorus slag produced when the yellow phosphorus is prepared by the electric furnace method and the chromium slag produced during the preparation process of the chromium salt sodium dichromate are the main raw materials , wherein the main components and mass percentage of yellow phosphorus slag are: SiO 2 35%, CaO49%, Al 2 o 3 5%, MgO1%; the main composition and mass percentage of chromium slag are: SiO 2 4%, Al 2 o 3 6%, CaO35%, MgO15%, Fe 2 o 3 12%, Cr 2 o 3 2.5%, the preparation process specifically includes the following steps:

[0029] (1) First crush the yellow phosphorus slag, chromium slag, quartz sand, fluorite, and charcoal, and screen the phosphorous slag, chromium slag, fluorite, and charcoal through a 40-mesh sieve. The particle size of the quartz sand is 80 mesh, of which two The content of silicon oxide is 98%. Weigh respect...

Embodiment 3

[0035] A method for preparing glass-ceramic by using yellow phosphorus slag and chromium slag described in this embodiment, the phosphorus slag produced when the yellow phosphorus is prepared by the electric furnace method and the chromium slag produced during the preparation process of the chromium salt sodium dichromate are the main raw materials , wherein the main components and mass percentage of yellow phosphorus slag are: SiO 2 45%, CaO43%, Al 2 o 3 3%, MgO1.8%; the main composition and mass percentage of chromium slag are: SiO 2 11%, Al 2 o 3 10%, CaO23%, MgO33%, Fe 2 o 3 7%, Cr 2 o 3 7.5%, the preparation process specifically includes the following steps:

[0036] (1) After crushing yellow phosphorus slag, chromium slag, quartz sand, fluorite and anthracite, the phosphorus slag, chromium slag, fluorite and anthracite are screened through a 40-mesh sieve, and the particle size of the quartz sand is 80 mesh, of which The silicon dioxide content is 97%, respectiv...

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Abstract

The invention discloses a method for preparing microcrystalline glass by using yellow-phosphorus slag and chromium slag and belongs to the field of resource converting of wastes. The microcrystalline glass contains the raw materials in parts by weight: 45-55 parts of yellow-phosphorus slag, 25-35 parts of chromium slag, 10-20 parts of quartz sand, 3-6 parts of reducer and 1-3 parts of fluorite and is obtained through crushing the raw materials and carrying out batching, founding, molding, annealing, nucleating and crystallizing. According to the method, the effective utilization of both the yellow-phosphorus slag and the chromium slag is achieved simultaneously, the problem, i.e., pollution to environment caused by the yellow-phosphorus slag and the chromium slag is directly eliminated, the preparation process is simple, and the product quality is stable, so that the method is applicable to large-scale industrial production.

Description

technical field [0001] The invention relates to a method for preparing glass ceramics by using yellow phosphorus slag and chromium slag, and belongs to the field of solid waste resource utilization. Background technique [0002] Glass-ceramics is a uniform polycrystalline material in which glass and crystals coexist, also known as glass ceramics, by adding crystal nucleating agents and other methods, forming crystal nuclei in the glass through heat treatment, and then making the crystal nuclei grow. The structure and properties of glass-ceramics are different from ceramics and glass. Its properties are determined by the mineral composition of the crystal phase, the chemical composition of the glass phase and their quantity. Therefore, it combines the characteristics of ceramics and glass and is a special type. Material. So far, as structural materials, optical materials, electrical materials, building materials, etc., glass-ceramic has been widely used in various fields of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00
CPCC03C10/0036C03C10/0063
Inventor 宁平李彬何力为张宝华
Owner KUNMING UNIV OF SCI & TECH
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