Method for preparing flyash excitant based on palm leaves

A technology of palm leaf and fly ash, which is applied in the field of fly ash activator, can solve the problems of destroying the durability of concrete, corrosion of steel bars, single materials, etc., achieve significant economic and social benefits, save cement, and increase the dosage Effect

Inactive Publication Date: 2017-05-31
CHANGZHOU AMANTE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: aiming at the problem that the current activator has a single material, and the addition of inorganic substances such as alkali and salt will cause whitening, corrosion of steel bars and damage to the durability of concrete due to alkali-aggregate reaction, it provides A method of extracting organic acids and organic salts in palm leaves by ultrasonic vibration and gas explosion, adding sodium hydroxide to react with the organic acids to increase the content of organic salts, using vanadium pentoxide as a catalyst, and using two The extract is modified with mercaptopropanol to increase its ability to bind to metals, and finally the activated modified carbide is used as a carrier to absorb the beneficial components in the modified extract, thereby producing a fly ash activator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Take palm leaves, rinse the surface with water, put the washed palm leaves in a drying oven at 50°C for 7 hours, then put the dried palm leaves in a pulverizer for crushing, pass through a 100-mesh sieve, and collect Sieve the granules, put the sieved granules and 10% sodium hydroxide solution in a mass ratio of 1:4 into a container, place the container in an ultrasonic oscillator, set the frequency at 1.5MHz, and vibrate for 30min; After the above-mentioned shaking is finished, add the above-mentioned cellulase of 5% of the mass of the sieved particles to the container, continue the shaking and enzymolysis for 40 minutes, then put the mixture in the container into the gas explosion device, set the gas explosion temperature to 46°C, and The explosion pressure is 1.5MPa, and the pressure holding time is 60s after the gas explosion, the mixture after the gas explosion is collected, and the mixture after the gas explosion is filtered, the filtrate and the filter residue are...

example 2

[0020]Take palm leaves, rinse the surface with water, put the washed palm leaves in a drying oven at 50°C for 9 hours, then put the dried palm leaves into a pulverizer for crushing, pass through a 100-mesh sieve, and collect Sieve the particles, put the sieved particles and 10% sodium hydroxide solution in a mass ratio of 1:4 into a container, place the container in an ultrasonic oscillator, set the frequency at 2.0MHz, and vibrate for 35min; After the above-mentioned shaking is over, add the above-mentioned cellulase with 6% of the mass of the sieved particles to the container, continue to shake and enzymolyze for 50 minutes, then put the mixture in the container into the gas explosion device, set the gas explosion temperature to 52°C, and The explosion pressure is 1.8MPa, and the pressure holding time is 70s after gas explosion, collect the mixture after the gas explosion, and filter the mixture after the gas explosion, collect the filtrate and filter residue, and the filter ...

example 3

[0023] Take palm leaves, rinse the surface with water, put the washed palm leaves in a drying oven at 50°C for 8 hours, then put the dried palm leaves in a pulverizer for crushing, pass through a 100-mesh sieve, and collect Sieve the particles, put the sieved particles and 10% sodium hydroxide solution in a mass ratio of 1:4 into a container, place the container in an ultrasonic oscillator, set the frequency at 1.8MHz, and vibrate for 33min; After the above-mentioned shaking is over, add the above-mentioned cellulase with 6% of the mass of the sieved particles to the container, continue the shaking and enzymolysis for 45 minutes, then put the mixture in the container into the gas explosion device, set the gas explosion temperature to 49 ° C, and The explosion pressure is 1.7MPa, and the pressure holding time is 65s after gas explosion, collect the mixture after the gas explosion, and filter the mixture after the gas explosion, collect the filtrate and filter residue, and the fi...

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Abstract

The invention relates to a method for preparing a flyash excitant based on palm leaves, belongs to the technical field of flyash excitants and provides a method for preparing a flyash excitant based on palm leaves. The method comprises the steps of extracting organic acid substances and an organic salt from the palm leaves by using ultrasonic oscillation and gas explosion; adding sodium hydroxide and the organic acid substances for reaction to increase the content of the organic salt; modifying an extract by adopting vanadium pentoxide as a catalyst and using dimercaprol dimercaptopropanol to increase the bonding capacity of the extract and a metal; and finally adopting the activated and modified carbide as a carrier for adsorbing beneficial components in the modified extract to prepare the flyash excitant. According to the prepared flyash excitant, the potential activity of flyash can be effectively excited, the dose of the flyash in concrete is increased, the peaceability of the concrete can be improved, cement is greatly saved under the condition of not affecting the strength of the concrete, the cost of the concrete and a concrete product is reduced, and the method has significant economical benefits and social benefits.

Description

technical field [0001] The invention relates to a method for preparing a fly ash activator based on palm leaves, and belongs to the technical field of the fly ash activator. Background technique [0002] The activator is a compound agent that can stimulate the active substances in the industrial waste residue and make it undergo a chemical reaction. It can effectively make a large amount of SiO contained in the inert state of "vitreous body" contained in fly ash, slag and other industrial waste through the chemical method of excitation. 2 and Al 2 o 3 These active substances undergo chemical reactions to produce cohesiveness, which can greatly reduce the amount of cement used and improve its utilization rate. Therefore, it is an important component of industrial raw materials such as cement. [0003] The methods of stimulating the activity of fly ash are: (1) physical method: grinding of fly ash, sorting and curing temperature control; (2) chemical method: various alkali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/32C04B24/16C04B28/02
CPCC04B28/021C04B40/0039C04B2201/50C04B24/16C04B14/32C04B18/08C04B22/143C04B22/002
Inventor 陈兴权宋家平赵玉林
Owner CHANGZHOU AMANTE CHEM CO LTD
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