Method for preparing composite type iron ore pellet adhesive by utilizing landfill leachate

Active Publication Date: 2017-05-31

FUZHOU UNIVERSITY +1

7 Cites 6 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] With the development of our country's social economy and the acceleration of urbanization, the amount of urban garbage in our country has increased extremely rapidly. In the process of processing many urban domestic garbage, ...

Abstract

The invention discloses a method for preparing a composite type iron ore pellet adhesive by utilizing a landfill leachate. A landfill leachate concentrated solution with the solid content being 30-40% is evenly mixed with a sodium hydroxide solution, and after the stirring reaction is conducted under the water-bath condition of 80-90 DEG C, a solution is cooled, and then a modified landfill leachate can be prepared; and the prepared modified landfill leachate is evenly mixed with cement and calcium oxide in proportion, and after spray drying, the composite type iron ore pellet adhesive is prepared. By means of the methods that the landfill leachate concentrated solution and sodium hydroxide are subjected to mixing modification, and then the composite type iron ore pellet adhesive is prepared by mixing the modified landfill leachate with the cement and the calcium oxide in proportion, the method is simple, and operation is practicable; and the adhesive is prepared from the landfill treatment leachate produced in the landfilling process, so that recycling of waste resources is achieved, and the method has great significance on sustainable development and utilization of energy sources.

Technology Topic

AdhesiveEnergy source +11

Image

Examples

Experimental program(9)
Effect test(1)

Example Embodiment

[0020] Example 1

[0021] A method for preparing composite iron ore pellet binder using garbage leachate:

[0022] Mix 100Kg of landfill leachate concentrate with a solid content of 30% and 6Kg of sodium hydroxide solution with a concentration of 3mol/L. After stirring and reacting in a water bath at 80°C for 0.5h, the solution is cooled. The modified landfill leachate can be prepared. Take 40 parts of the modified landfill leachate, 25 parts of cement and 6 parts of quicklime and mix them evenly, and then add them to the spray drying equipment, after spray drying at 160℃, that is A composite iron ore pellet binder can be prepared.

[0023] The composite iron ore pellet binder prepared in this embodiment was added to the iron concentrate at 2% of the mass of the iron ore concentrate to prepare iron ore pellets.

Example Embodiment

[0024] Example 2

[0025] A method for preparing composite iron ore pellet binder using garbage leachate:

[0026] Mix 100Kg of landfill leachate concentrate with 35% solid content and 10Kg of sodium hydroxide solution with a concentration of 3mol/L. After stirring and reacting in a water bath at 85°C for 1h, the solution is cooled. The modified landfill leachate can be prepared. Take 40 parts of the modified landfill leachate, 25 parts of cement, 6 parts of quicklime and mix them evenly, and then add them to the spray drying equipment, after spray drying at 180°C, you can The composite iron ore pellet binder is prepared.

[0027] The composite iron ore pellet binder prepared in this embodiment was added to the iron concentrate at 2% of the mass of the iron ore concentrate to prepare iron ore pellets.

Example Embodiment

[0028] Example 3

[0029] A method for preparing composite iron ore pellet binder using garbage leachate:

[0030] Mix 100Kg of landfill leachate concentrate with a solid content of 40% and 6Kg of sodium hydroxide solution with a concentration of 3mol/L. After stirring and reacting for 1.5h in a water bath at 90°C, the solution is cooled. The modified landfill leachate can be prepared. Take 50 parts of the modified landfill leachate, 30 parts of cement and 12 parts of quicklime to mix evenly, then add it to the spray drying equipment, and after spray drying at 200°C, that is A composite iron ore pellet binder can be prepared.

[0031] The composite iron ore pellet binder prepared in this embodiment was added to the iron concentrate at 2% of the mass of the iron ore concentrate to prepare iron ore pellets.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Classification and recommendation of technical efficacy words

simple method
Operable

Method for preparing composite type iron ore pellet adhesive by utilizing landfill leachate

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Preparation method of tobacco endogenous perfume and application thereof

Preparation method of carbon nitride compound with high catalytic degradation activity

Molybdenum trioxide laminated nanometer bar and preparation method

Method of breeding mung bean sterile mutant based on CRISPR/Cas9 gene editing technology and special gRNA

Extraction method of kinesiology parameters

Classification and recommendation of technical efficacy words

Method for producing electronic job pages

System and method to enhance instant messaging

Aluminum-silicon alloy refining agent and preparation thereof

Method for preparing nanosilver powder in batches

Configuration method for an installation comprising solar protection and/or lighting devices

Iron-carbon inner electrolysis-Fenton oxidation-electrolytic electrocatalytic oxidation combined wastewater treatment method and device

Making method for multi-crystal TFT array of active driven organic EL display screen

Service transmission method and controller in sleeping mode

Pouring mold and pouring method for gypsum shield segment model

Application of spore wall protein in prevention and control of enterocytozoon hepatopenaei infection by mixing and feeding shrimps