Zero discharge technology of diatomite-sodalite composite material

A technology of composite materials and diatomite, which is applied in the zero-emission field of preparing diatomite-sodalite composite materials, can solve the problems of high raw material cost, complex process, high energy consumption, etc., and achieve reduced production costs and environmentally friendly processes Effect

Active Publication Date: 2016-09-28
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of the industrial raw material synthesis method is that the cost of raw materials is relatively high, and although the synthesis of fly ash raw materials has a cost advantage, at present, the patent reported on the synthesis of sodalite from fly ash uses alkali fusion-water Thermal method, calcination-hydrothermal method, calcination-dry synthesis and other methods have problems such as high energy consumption, complicated process and long reaction time
And take diatomite as raw material, the method for synthesizing diatomite-sodalite composite material has no report

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
  • Zero discharge technology of diatomite-sodalite composite material
  • Zero discharge technology of diatomite-sodalite composite material
  • Zero discharge technology of diatomite-sodalite composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A zero-emission technology for preparing diatomite-sodalite composite material, the technology comprises the following steps:

[0028] (1) measure the composition content of diatomite, its composition content is shown in Table 1, diatomite, NaOH, NaAlO 2 and water, in molar ratio, as SiO 2 / Al 2 o 3 =2.0, Na 2 O / SiO 2 =1.2,H 2 O / Na 2 Add the ratio of O=40 into the reactor, at 80°C, the stirring rate is 200rpm, mix and react for 1h, and form a diatomaceous earth-gel mixture;

[0029] (2) crystallize the diatomaceous earth-gel mixture obtained in step (1) at 100° C. for 6 h;

[0030] (3) Filtrate to obtain a filter cake and a filtrate, and dry the filter cake at 50° C. to obtain a diatomite-sodalite composite material. The filtrate enters the step (1) according to its composition proportioning for recycling.

Embodiment 2

[0032] A zero-emission technology for preparing diatomite-sodalite composite material, the technology comprises the following steps:

[0033] (1) measure the composition content of diatomite, its composition content is shown in Table 1, diatomite, NaOH, NaAlO 2 and water, in molar ratio, as SiO 2 / Al 2 o 3 =2.2, Na 2 O / SiO 2 = 1.5, H 2 O / Na 2 O=45. Add it into the reactor, at 70°C, with a stirring rate of 200rpm, mix and react for 3h to form a diatomaceous earth-gel mixture;

[0034] (2) Crystallize the diatomaceous earth-gel mixture obtained in step (1) at 90° C. for 6 h;

[0035] (3) Filtrate to obtain a filter cake and a filtrate, and dry the filter cake at 50° C. to obtain a diatomite-sodalite composite material. The filtrate enters the step (1) according to its composition proportioning for recycling.

Embodiment 3

[0037] A zero-emission technology for preparing diatomite-sodalite composite material, the technology comprises the following steps:

[0038] (1) measure the composition content of diatomite, its composition content is shown in Table 1, diatomite, NaOH, NaAlO 2 and water, in molar ratio, as SiO 2 / Al 2 o 3 =2.3, Na 2 O / SiO 2 = 2.0, H 2 O / Na 2 O=35. Add it into the reactor, at 85°C, the stirring rate is 200rpm, and mix and react for 1h to form a diatomaceous earth-gel mixture;

[0039] (2) Crystallize the diatomaceous earth-gel mixture obtained in step (1) at 95° C. for 4 hours;

[0040] (3) Filtrate to obtain a filter cake and a filtrate, and dry the filter cake at 50° C. to obtain a diatomite-sodalite composite material. The filtrate enters the step (1) according to its composition proportioning for recycling.

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 relates to the field of synthesis technology of inorganic composite materials, and concretely relates to a zero discharge technology of a diatomite-sodalite composite material. The technology comprises the following steps: composition of diatomite is determined, the diatomite, NaOH, NaAlO2 and water are added into a polytetrafluoroethylene reagent bottle with stirring for a reaction according to a mole ratio SiO2 / Al2O3=1.9-2.3, Na2O / SiO2=1.5-3.5, H2O / Na2O=30-50; obtained gel is crystallized at 90-100 DEG C, and crystallization time is 3-8 hours; the stirring speed is 100rpm; after the reaction is completed, mixed liquor is filtered; a filter cake is dried, in order to obtain the diatomite-sodalite composite material. The diatomite-sodalite composite material is prepared by using diatomite as a raw material; the method has the advantages of cheap and easily available raw materials, reuse of filtrate in the steps, zero discharge of waste liquid, reduced production cost, and green technology and environmental protection.

Description

technical field [0001] The invention relates to the technical field of synthesis of inorganic composite materials, in particular to a zero-emission technology for preparing diatomite-sodalite composite materials. Background technique [0002] Diatomaceous earth is a kind of porous biological siliceous rock, which is formed by the remains of ancient single-celled lower plant diatoms through deposition and preliminary diagenesis. Its main component is amorphous SiO 2 , has the characteristics of light texture, large porosity (80%-90%), large specific surface area, stable properties, high melting point (over 1400°C), strong heat insulation, strong sound absorption, and insulation. In my country, diatomaceous earth resources are very rich, with ore reserves exceeding 2×10 10 tons ranked second in the world. At present, diatomite is mainly used in environmental, chemical, petroleum and construction projects in the form of adsorbents, filter aids, fillers, catalyst carriers, and...

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): C04B30/00C04B14/04C04B14/08C04B22/00C04B22/06
CPCC04B30/00C04B14/08C04B14/045C04B22/062C04B22/0093
Inventor 钱程袁东刘兴勇谭文渊潘传江张伟
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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