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Compaction of bentonite blocks. Development of technique for industrial production of blocks which are manageable by man

Abstract

In this report a useful technique for producing compacted blocks of bentonite is described. The report only deals with the technique to produce uniaxially compacted blocks (weight of the blocks: 10-15 kg) which are manageable by man. Tests for producing blocks with a weight of approximately 10 kg were carried out at Hoeganaes Bjuf AB in Bjuf. This industry is normally producing refractory bricks and other refractory products. The plant has facilities for handling large volumes of clay. Furthermore there are machines suitable for producing uniaxially compacted blocks. Performed tests at the plant show that it is possible to compact blocks with good quality. Best quality was reached with a coarsely ground bentonite at a water ratio of 20 %. The compaction was performed with lubricated form and stepwise loading. The tests at Hoeganaes Bjuf AB were preceded by tests in the laboratory. In these tests smaller samples were compacted for studying how different factors affect the quality of the samples (density, water ratio, homogeneity et cetera). The influence of following factors was studied: water ratio of bentonite; bentonite type and granulometry; compaction pressure; compaction rate; form geometry; form lubrication; form heating. The results from these tests were used to  More>>
Authors:
Johannesson, L E; Boergesson, L; Sanden, T [1] 
  1. Clay Technology AB, Lund (Sweden)
Publication Date:
Apr 01, 1995
Product Type:
Technical Report
Report Number:
SKB-TR-95-19
Reference Number:
SCA: 052002; 360601; PA: AIX-27:052035; EDB-96:104110; NTS-96:019528; SN: 96001618237
Resource Relation:
Other Information: PBD: Apr 1995
Subject:
05 NUCLEAR FUELS; 36 MATERIALS SCIENCE; BENTONITE; COMPACTING; MANUFACTURING; RADIOACTIVE WASTE DISPOSAL; UNDERGROUND DISPOSAL
OSTI ID:
252858
Research Organizations:
Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ON: DE96629558; TRN: SE9600117052035
Availability:
INIS; OSTI as DE96629558
Submitting Site:
SWDN
Size:
60 p.
Announcement Date:
Jul 23, 1996

Citation Formats

Johannesson, L E, Boergesson, L, and Sanden, T. Compaction of bentonite blocks. Development of technique for industrial production of blocks which are manageable by man. Sweden: N. p., 1995. Web.
Johannesson, L E, Boergesson, L, & Sanden, T. Compaction of bentonite blocks. Development of technique for industrial production of blocks which are manageable by man. Sweden.
Johannesson, L E, Boergesson, L, and Sanden, T. 1995. "Compaction of bentonite blocks. Development of technique for industrial production of blocks which are manageable by man." Sweden.
@misc{etde_252858,
title = {Compaction of bentonite blocks. Development of technique for industrial production of blocks which are manageable by man}
author = {Johannesson, L E, Boergesson, L, and Sanden, T}
abstractNote = {In this report a useful technique for producing compacted blocks of bentonite is described. The report only deals with the technique to produce uniaxially compacted blocks (weight of the blocks: 10-15 kg) which are manageable by man. Tests for producing blocks with a weight of approximately 10 kg were carried out at Hoeganaes Bjuf AB in Bjuf. This industry is normally producing refractory bricks and other refractory products. The plant has facilities for handling large volumes of clay. Furthermore there are machines suitable for producing uniaxially compacted blocks. Performed tests at the plant show that it is possible to compact blocks with good quality. Best quality was reached with a coarsely ground bentonite at a water ratio of 20 %. The compaction was performed with lubricated form and stepwise loading. The tests at Hoeganaes Bjuf AB were preceded by tests in the laboratory. In these tests smaller samples were compacted for studying how different factors affect the quality of the samples (density, water ratio, homogeneity et cetera). The influence of following factors was studied: water ratio of bentonite; bentonite type and granulometry; compaction pressure; compaction rate; form geometry; form lubrication; form heating. The results from these tests were used to modify and optimize the technique in the factory.}
place = {Sweden}
year = {1995}
month = {Apr}
}