Cement manufacturing apparatus and method

a manufacturing apparatus and cement technology, applied in the direction of solid waste management, climate sustainability, solid separation, etc., can solve the problems of increasing the quantity of unburned carbon contained, the difficulty of fly ash waste treatment, and the difficulty of perfectly removing unburned carbon contained in fly ash, etc., to achieve the effect of increasing the quantity of fly ash used

Inactive Publication Date: 2010-01-21
TAIHEIYO CEMENT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Benefits of technology

The present invention provides an improved way for producing high-quality concrete by adding large amounts of fly ash without causing excessive loss of strength or reducing its effectiveness over time. This can be useful when making certain types of concrete that require less expensive raw materials such as clay or sand.

Problems solved by technology

This patent describes methods for reducing cost and improving efficiency during burning of coal or other fossil fuels. However, there are technical problem addressed in this patent text relating to how to effectively remove unwanted carbon from fly ash without affecting its usefulness in making cements.

Method used

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  • Cement manufacturing apparatus and method
  • Cement manufacturing apparatus and method

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Embodiment Construction

[0024]FIG. 1 shows an example of a system composition to which a cement manufacturing apparatus and method according to the present invention are applied, and this system roughly comprises a fly ash tank 1, a gypsum tank 2, a slurry tank 3 for generating slurry by adding water to fly ash and gypsum, a surface modifier 5 for adding sharing force to slurry after adding collector to the slurry to modify the surface of unburned carbon, an adjustment tank 8 for generating air bubbles by adding frothing agent to slurry, a flotation machine 12 for separating unburned carbon from fly ash and gypsum by causing the unburned carbon to adhere to the air bubbles and making them float, a solid / liquid separator 14 for solid / liquid separating tailing from the flotation machine 12, a filter press 19 for obtaining unburned carbon by solid / liquid separating froth from the flotation machine 12, a clinker silo 20 for storing clinker, a cement mill 21 for generating cement by grinding clinker, fly ash

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Abstract

To provide a cement manufacturing apparatus and the like capable of increasing quantity of fly ash used in the apparatus while controlling unburned carbon content in cement within a permissible range. The cement manufacturing apparatus and the like comprises a removal means for removing unburned carbon from gypsum, and a grinding means for grinding gypsum from which unburned carbon is removed by the removal means together with clinker to generate cement. With the apparatus, total unburned carbon content in cement can be reduced, and the quantity of fly ash used in the apparatus can be increased by the reduced amount of unburned carbon. The removal means can remove unburned carbon contained in gypsum as well as unburned carbon contained in fly ash, and the grinding means may grind the fly ash from which unburned carbon is removed together with the gypsum, from which unburned carbon is removed, and clinker. The removal means may simultaneously remove unburned carbon contained in gypsum and unburned carbon contained in fly ash.

Description

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Claims

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Application Information

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Owner TAIHEIYO CEMENT CORP
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