GB913177A - Improvements in or relating to the utilization of waste material - Google Patents

Improvements in or relating to the utilization of waste material

Info

Publication number
GB913177A
GB913177A GB871/61A GB87161A GB913177A GB 913177 A GB913177 A GB 913177A GB 871/61 A GB871/61 A GB 871/61A GB 87161 A GB87161 A GB 87161A GB 913177 A GB913177 A GB 913177A
Authority
GB
United Kingdom
Prior art keywords
grain size
coal
crushing
fraction
additive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB871/61A
Inventor
Ferenc Becker
Istvan Gal Gyular Kulcsar
Lajos Palotai
Ferenc Reviczky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikex Nehezipari Kulkereskedelmi Vallalat
Original Assignee
Nikex Nehezipari Kulkereskedelmi Vallalat
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikex Nehezipari Kulkereskedelmi Vallalat filed Critical Nikex Nehezipari Kulkereskedelmi Vallalat
Priority to GB871/61A priority Critical patent/GB913177A/en
Publication of GB913177A publication Critical patent/GB913177A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Ceramic Products (AREA)

Abstract

Coal mine waste is utilized by separating it into a coal-rich fraction and a coal poor fraction by crushing the material, suspending it in water, and passing it through a hydrocyclone under controlled conditions of grain size and density of suspension. According to the invention the density of the suspension is adjusted, by the addition of water, to 1.22-1.45 kg. per litre and the grain size of the material is not greater than 20 mm. Also, according to the invention, at least 40% by weight has a grain size not greater than 1 mm. and the distribution of grain size under 1 mm. is: 10-30%, 0-0.05 mm.; 20-40%, 0.05-0.5 mm.; 30-70%, 0.5-1 mm. A suitable excess pressure for the hydrocyclone is 0.5 atmosphere. Crushing to a grain size of 20 mm. follows preliminary screening to separate a grain size not greater than 80 mm. If crushing to an overall grain size of 20 mm. does not yield the required percentage of grain size under 1 mm. a return and refeeding process may be employed; or material of this grain size may be added, obtainable from the coal poor fraction, or from the crushing of pieces in excess of 80 mm. grain size. The fraction having a grain size under 1 mm. may also be used as an additive in the manufacture of cement. The coal poor fraction may be further divided, by screening, into fractions of grain size less, and greater, than 2 mm. The finer can be used as an additive to raw clay in the manufacture of bricks. The coarser can be used for mine-filling operations; also as an additive for low-density concrete. Detailed examples are given. Specification 913,178 is referred to.
GB871/61A 1961-01-09 1961-01-09 Improvements in or relating to the utilization of waste material Expired GB913177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB871/61A GB913177A (en) 1961-01-09 1961-01-09 Improvements in or relating to the utilization of waste material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB871/61A GB913177A (en) 1961-01-09 1961-01-09 Improvements in or relating to the utilization of waste material

Publications (1)

Publication Number Publication Date
GB913177A true GB913177A (en) 1962-12-19

Family

ID=9711949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB871/61A Expired GB913177A (en) 1961-01-09 1961-01-09 Improvements in or relating to the utilization of waste material

Country Status (1)

Country Link
GB (1) GB913177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585265A1 (en) * 1985-07-26 1987-01-30 Gagneraud Pere Fils Entreprise Process for recovering fine particles of potential value contained in colliery dumps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585265A1 (en) * 1985-07-26 1987-01-30 Gagneraud Pere Fils Entreprise Process for recovering fine particles of potential value contained in colliery dumps

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