try for free
  • CN1226222C - Method for producing building gypsum
    CN1226222C - Method for producing building gypsum

    The present invention relates to a method for preparing building gypsum plaster by ardealite. Ardealite of a phosphonic acid byproduct is used as raw material by a wet method, and is quickly dehydrated by a dryer, and thus, a calcination containing semi-hydrated gypsum is prepared. The calcination is added with lemon acid or trisodium citrate dihydrate, and is milled until the median diameter

    Read More
  • LIGHTWEIGHT GYPSUM BASED MATERIALS: METHODS
    LIGHTWEIGHT GYPSUM BASED MATERIALS: METHODS

    lightening methods, organic filler, SAS, waste products. 1 INTRODUCTION The calcined gypsum (CaSO 4 0,5H 2 O) is one of the most environmentally friendly and sus-tainable building binders. The energy consumption necessary for gypsum production is very low, compared to the energy consumption of cement and lime production. Gypsum can be also

    Read More
  • Lightweight Gypsum Based Materials: Methods of Preparation
    Lightweight Gypsum Based Materials: Methods of Preparation

    Feb 01, 2017 Feb 01, 2017 The lightweight gypsum materials can be used in a similar way as an aerated autoclaved concrete (AAC), whose energy consumption at production is several times higher. The main methods of the preparation of gypsum-based lightweight materials are described and compared. Gypsum can be lightened indirectly by the lightweight filler or directly

    Read More
  • CN101314530A - Method for producing building material
    CN101314530A - Method for producing building material

    The invention relates to a method for making a building material by low-temperature ceramic modified industrial side product gypsum, belonging to the building material technical field. The compositions adopted by the method are mixed according to the following mass ratio that: gelating material: side product gypsum: filler: activator: auxiliary agent: water reducing agent: polymer emulsion

    Read More
  • Production and use of by-product gypsum in the
    Production and use of by-product gypsum in the

    Jan 01, 1996 13. Lutz, R., Preparation of Phosphoric Acid Waste Gypsum for Further Processing to Make Building Materials, Zement Kalk Gips 47(12):690-696 (1994). 14. Instytut Tech&i Budowlanej w Warszawie, fie Qualitative Requirements for By-product Gypsums as Raw Material in Building Materials Production, Warszawa (199 1). 15

    Read More
  • Gypsum processing and use - Humanitarian Library
    Gypsum processing and use - Humanitarian Library

    expensive production equipment. Properties of gypsum plaster The properties of gypsum plaster will vary depending on the method of production. With relatively simple burning and processing techniques the plaster that will result will have varying amounts of hemi-hydrate, anhydrite, ash, and possibly some sand, silt, and clay

    Read More
  • Production of glass–ceramics from heavy metal
    Production of glass–ceramics from heavy metal

    method. Heavy metal gypsum desulfurization process Heavy metal gypsum and glass powder were mixed up at the silicon to calcium ratio of 0.8, 1.5, 2.0 and 2.5, re-spectively. The four groups of samples were heated in air at 1,173 K, with a heating rate of 10 K/min and kept at 1,173 K for 2 h. In addition, the samples with silicon to

    Read More
  • (PDF) PRODUCTION OF PLASTER - ResearchGate
    (PDF) PRODUCTION OF PLASTER - ResearchGate

    The gas-based foaming method utilises aluminium sulphate, potassium alum or ammonium bicarbonate for the chemical production of gas bubbles in gypsum paste

    Read More
  • Method of preparing gypsum mortar with modifiers and
    Method of preparing gypsum mortar with modifiers and

    The method according to item 16, characterized in that the plasticizer is in a dry state, and the specified stage Association additionally includes preliminary dissolution modifier in water, and a plasticizer is added to the construction plaster with a mixture of building gypsum - plasticizer, and then add a mix of building gypsum - plasticizer

    Read More
  • Design, preparation and application of internal gypsum
    Design, preparation and application of internal gypsum

    Sep 29, 2006 Sep 29, 2006 Covers the design, preparation and application of plaster based on gypsum, cement, cement and lime, for internal plastering on all types of background used under normal conditions. It includes plastering onto both new and old backgrounds and

    Read More
  • Method of preparation of gypsum cement-puzzolan mix
    Method of preparation of gypsum cement-puzzolan mix

    The invention relates to the construction materials industry and can be used in the production of mixed binding agents on the basis of gypsum and Portland cement. Known method of preparing a raw material mixture for construction products, including mechanical activation gipsotsementnyj binder with additives and water (EN 2044714 C1, IPC C04B 28

    Read More
  • Process for preparation of gypsum shapes - Chemische
    Process for preparation of gypsum shapes - Chemische

    Another process for preparation of building materials from gypsum is described in German No. OS 28 05 523 in which 30-100% of calcined gypsum (plaster) having a Blaine surface of 500 to 15,000 cm 2 /g is added to the moist dihydrate. Before shaping by molding can be successful, the phosphogypsum has to be purified by a complicated procedure (cf

    Read More
  • CN102343758A - Production method of gypsum relief
    CN102343758A - Production method of gypsum relief

    The invention, belonging to the field of ornaments, relates to a method for producing a gypsum relief product, comprising the following steps: (1) preparing slurry, (2) making a die, (3) grouting

    Read More
Click avatar to contact us
Click avatar to contact us
gotop