Title:
METHOD FOR PRODUCING LIGHTWEIGHT AGGREGATE
Document Type and Number:
Japanese Patent JP2017065971
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing lightweight aggregate which, even when primary granules are produced in a batch type kneader and the primary granules are pelletized by a rolling motion pelletizer, can prevent formation of lumpy secondary granules (green pellets).SOLUTION: A method for producing lightweight aggregate comprises: a primary granulation step of obtaining primary granules 5 by kneading a powdery aggregate raw material FA1 and water by using a batch type kneader 3; a step of supplying the primary granules to a rolling motion pelletizer 8; a secondary granulation step of obtaining green pellets 9 as secondary granules by subjecting the primary granules 5 to rolling motion granulation by the rolling motion pelletizer 8; and a step of obtaining lightweight aggregate by sintering the green pellets 9. Immediately before discharging the primary granules 5 from the kneader 3, a powdery aggregate raw material FA2 is supplied to the kneader 3 to adhere the powdery aggregate raw material to the surface of the primary granules 5.SELECTED DRAWING: Figure 1
Inventors:
KITAHARA TETSUGORO
Application Number:
JP2015193235A
Publication Date:
April 06, 2017
Filing Date:
September 30, 2015
Export Citation:
Assignee:
TIGER MACHINE SEISAKUSHO:KK
International Classes:
C04B14/02; C04B18/08; C04B20/06
Domestic Patent References:
| JPH1192191A | 1999-04-06 | |||
| JPS5370976A | 1978-06-23 | |||
| JPH05229858A | 1993-09-07 | |||
| JPH07223850A | 1995-08-22 | |||
| JPS59111972A | 1984-06-28 |
Attorney, Agent or Firm:
Masami Sakai
Norio Kagami
Yoshikuni Suda
Norio Kagami
Yoshikuni Suda