Aliphatic water reducing agent prepared from lignosulfonate wastewater and synthesis process thereof
A technology of lignosulfonate and aliphatic water-reducing agent, which is applied in the field of concrete water-reducing agent, can solve the problems of digesting lignosulfonate wastewater, unable to prepare lignosulfonate water-reducing agent, etc. Reasonable utilization of resources, improvement of water reduction effect, and effect of reducing production cost
Active Publication Date: 2020-05-01
ZHEJIANG JISHENG CHEM BUILDING MATERIALS
View PDF4 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the existing lignosulfonate wastewater has been oversaturated, and it is impossible to completely digest lignosulfonate wastewater by using lignosulfonate wastewater to prepare lignosulfonate water reducer. Therefore, it is lignosulfonate The comprehensive utilization of wastewater has opened up a new way, and it is necessary to realize the resource utilization of lignosulfonate wastewater
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0059] The difference between embodiments 10-13 and embodiment 1 is that the extractant comprises the following raw materials in weight percentage:
[0060]
[0061] The difference between Embodiment 14-17 and Embodiment 1 is that the stripping agent comprises the following raw materials in weight percentage:
[0062]
[0063]
[0064] The difference between Embodiment 18-21 and Embodiment 1 is that the heating temperature in step S2 is as shown in the table below:
[0065] Example Example 18 Example 19 Example 20 Example 21 temperature / ℃ 43 45 47 50
[0066] The difference between embodiment 22-25 and embodiment 1 is that the reaction time in step S2 is as shown in the table below:
[0067] Example Example 22 Example 23 Example 24 Example 25 time / h 0.5 0.7 1 1.3
[0068] The difference between Embodiment 26-29 and Embodiment 1 is that the heating temperature in step S3 is as shown in the table below:
[0...
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
| Property | Measurement | Unit |
|---|---|---|
| Nominal particle size | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to an aliphatic water reducing agent prepared from lignosulfonate wastewater and a synthesis process thereof, belonging to the technical field of water reducing agents for concrete. The aliphatic water reducing agent is prepared from the following raw materials in parts by weight: 10-30 parts of treated lignosulfonate wastewater, 10 to 30 parts of acetone, 40 to 70 parts of formaldehyde, 10 to 30 parts of sodium sulfite, and 40 to 60 parts of deionized water. According to the method, the lignosulfonate wastewater is used for preparing the aliphatic water reducing agent, so a new way for comprehensive utilization of the lignosulfonate wastewater is opened up, reasonable resource utilization of the lignosulfonate wastewater is achieved, and the water reducing effect ofthe aliphatic water reducing agent is improved.
Description
technical field [0001] The invention relates to the technical field of concrete water reducers, in particular to an aliphatic water reducer prepared from lignosulfonate wastewater and a synthesis process thereof. Background technique [0002] High-efficiency water reducer is one of the main raw materials for producing high-strength and high-performance concrete. At present, in the domestic market, in addition to naphthalene-based superplasticizers, there are also melamine resin superplasticizers, sulfamic acid superplasticizers and aliphatic superplasticizers, among which aliphatic superplasticizers are It is one of the most important non-naphthalene water reducers. The raw materials for the production of aliphatic water reducers include formaldehyde and sodium sulfite. [0003] At present, lignosulfonate wastewater is commonly used to prepare lignosulfonate water reducer, so as to realize the rational utilization of resources of lignosulfonate wastewater. However, the exi...
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
Login to View More IPC IPC(8): C04B24/18C04B103/30
CPCC04B24/18C04B2103/302
Inventor 金瑞浩徐伟竹林贤诸旭峰王森峰
Owner ZHEJIANG JISHENG CHEM BUILDING MATERIALS