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Section materials produced from phosphogypsum and its preparation method

A technology of phosphogypsum and profiles, which is applied in the field of structural components to achieve good social and environmental effects, good weather resistance and long service life.

Inactive Publication Date: 2008-12-03
贵阳顺海钛金镀膜厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of profiles with phosphogypsum has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Example: Take the phosphogypsum discharged by a certain enterprise in Guizhou Province as a raw material, and its chemical composition (mass fraction) is shown in the following table after testing:

[0031] Ingredient SO 3 CaO SiO 2 F MgO Al 2 O 3 Fe 2 O 3

[0032] Content% 39.46 31.40 4.99 0.2 0.04 0.04 0.21

[0033] Ingredient P 2 O 5 Na 2 OK 2 O TiO 2 MnO Loss on ignition Total

[0034] Content% 1.18 0.09 0.09 0.07 0.01 21.76 100

[0035] The first step is to prepare mixed powder: the waste residue phosphogypsum produced in the production process of wet phosphoric acid is washed with clean water and dried, and then sent to a tunnel kiln for calcination at a high temperature of 1300-1360 ° C for 25 minutes with civil gas, and the phosphogypsum is removed from the phosphogypsum. part of the moisture, P 2 O 5 and fluorine, and then grind the calcined charge to 400-450 mesh for use. At this time, the composition of phosphogypsum has chan...

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Abstract

The present invention is section bar produced with ardealite and PVC and its production process, and relates to structural member. The section bar is produced with mixed ardealite and dolomite powder 71-76 wt%, PVC 18-23 wt%, assistant 1-5 wt% and metallic sand 1 wt%. The production process includes water washing ardealite, drying, calcining and grinding into fine powder; crushing dolomite, calcining and grinding into powder; mixing to obtain mixed ardealite and dolomite powder; mixing PVC resin, mixed powder, assistant and metallic sand in the proportion, heating and extruding the mixture to form pellet; heating the pellet to form paste and extruding in mold to form section bar. The section bar has high weather resistance, high corrosion resistance, long service life, high waterproof and fireproof performance, high strength, electrostatic resistance and excellent insulating performance, and may be widely used.

Description

technical field [0001] The present invention relates to a structural member, in particular to a profile produced by using phosphogypsum as a raw material and a manufacturing method thereof. Background technique [0002] Profiles are building materials with a certain geometric shape in section, and are often used in various structures and buildings. At present, the profiles used in many departments, such as telecommunication optical cable supports, power cables and transformer supports, highway and bridge guardrails, railings in public places, joists in mines, etc., are almost all made of metal materials, especially steel. to make. Although steel has the advantage of high strength, ordinary steel is easy to rust in air and humid environments, has a limited service life, and frequent replacement consumes manpower and financial resources. If you switch to stainless steel or other metal materials, it will increase investment and use costs, which is not economical. Non-metals ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B24/26C04B26/08
Inventor 马兴祥
Owner 贵阳顺海钛金镀膜厂