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the effect of organic deflocculants in castables

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  • Deflocculants for refractory castables (review

    Review and analysis of foreign studies aimed at researching the influence of various deflocculants on properties of refractоry castables have been executed. Technological efficiency of deflocculants application had been shown ADS/W brands comparison to polyacrylate and sodium threepolyphosphate in alumina-cement-based mixture in terms mass`s humidity reduction of 17 and

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  • The Effect of Deflocculants on the Structure and CORE

    The study also evaluates the effect of content of deflocculants on duration of exothermal reaction in paste of castable with medium content of cement on formation of structure physical-mechanical properties of castable. it was established by means of compressive strength tests that the increase in content of sodium tripoliphosphate affects

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  • Deflocculants A Detailed OverviewDigitalfire

    At this point called "full deflocculation" viscosity reaches its minimum value and subsequent additions of deflocculants have an adverse effect. The most efficient compounds having deflocculant action for uses in ceramics are sodium silicate polyphosphates (pyrotripolytetrapolyetc.) and organic sodium and ammonium polyelectrolytes.

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  • Effect of Deflocculants on High Alumina Low Cement Castables

    Effect of Deflocculants on High Alumina Low Cement Castables 12 P a g e or vibration to take shape. Usually the castable tends to be self-flowing in nature if the distribution coefficient (q) is less than 0.25 and tends to be vibratable if the distribution coefficient is more than 0.25.

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  • Proceeding 232 THE VALUE OF ADDITIVES IN REFRACTORY

    as a co-formulation of modern organic additives with reactive alumina and other inorganic materials. Table1 shows the product range for silica fume free castables also including castables with max. 1 silica fume where silica fume does not directly serve as the matrix fine filler but is used to control the expansion of spinel forming castables.

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  • THE EFFECT OF POLYCARBOXYLATE ETHERS AS

    Deflocculants are indispensable additives in modern high performance and low-moisture castables. The primary role of additives in deflocculated castable systems is to provide sufficient flow for placing at low water additions necessary to conserve a compact structure. This can be achieved either by inorganic organic or polymeric dispersants.

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  • Study of the Effect of Composite Deflocculant on Changes

    Results are presented for an X-radiographic study of a cement matrix with addition of a composition of two deflocculantssodium tripolyphosphate and polycarboxylate ester after hardening and heat treatment at 60110°C. The effect of composite deflocculant on changes in concrete physicomechanical properties and heat resistance after firing at 1000 and 1200°C is evaluated.

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  • THE EFFECT OF POLYCARBOXYLATE ETHERS AS

    Deflocculants are indispensable additives in modern high performance and low-moisture castables. The primary role of additives in deflocculated castable systems is to provide sufficient flow for placing at low water additions necessary to conserve a compact structure. This can be achieved either by inorganic organic or polymeric dispersants.

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  • The Effect of Organic Dispersants in Castables

    The Effect of Organic Dispersants in Castables Herbert Hommer Konrad Wutz . Degussa Construction Polymers Germany . Abstract The different

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  • (PDF) The effect of organic deflocculants in castables

    The effect of three different types of deflocculants and their amounts on high-alumina low-cement castables is studied. Castable formulations were done as per continuous particle size distribution

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  • (PDF) The Effect of Deflocculants on the Structure and

    of sodium tripoliphosphate affects the strength properties of castables meanwhile Castament FS-20 on the contrary increases the compressive strength of ca stable samples. Dilatometric test

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  • THE EFFECT OF POLYCARBOXYLATE ETHERS AS

    Deflocculants are indispensable additives in modern high performance and low-moisture castables. The primary role of additives in deflocculated castable systems is to provide sufficient flow for placing at low water additions necessary to conserve a compact structure. This can be achieved either by inorganic organic or polymeric dispersants.

    Get Price
  • Drying behavior optimization of dense refractory castables

    May 01 2019 · In order to infer the effect of the active compound interaction with the distinct binders some pastes of the selected hydratable alumina and various cements with and without this additive keeping the same binder-AC mass proportion (58.3 41.7 ) as the designed castables were prepared and cured at 30 °C for 24 h.

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  • Dispersing (Deflocculating) Aluminas SpringerLink

    The characteristics of dispersing aluminas used for the thinning (deflocculation) of new refractory castables containing Al 2 O 3 (7696 ) and organic deflocculants are given. Suspensions based on four types of dispersants (with a moisture content of 19

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  • Investigation of Composite Deflocculant Influence on the

    3 H. Hommer The effect of polycarboxylate ethers as deflocculants in microsilica containing castables. Proceedings of the 10th Biennial Worldwide Congress on Refractories UNITECR´07 Dresden Germany September 18-21 2007 pp..

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  • Use of POLYCARBOXYLATE ETHERS to Improve the

    strength and thermo-mechanical behaviour 1 2 . Deflocculants are mandatory to achieve good workability at low water addition. Whereas in the past mainly inorganic or organic additives were used to improve e.g. flow behaviour of castable formulations nowadays polymers of a polycarboxylate ether type (PCE) are used 3 .

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  • The effect of deflocculants on the self-flow

    Jan 01 2005 · The influence of several deflocculants on the self-flow characteristics of an ultra low-cement high-alumina castable in the Al 2 O 3 –SiC–C system has been studied. The behavior of various deflocculants in high-alumina castables was evaluated in terms of apparent viscosity and pH of the matrix and self-flow value of the castable.

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  • Additives for High Purity Reduced Cement Castables

    More recently organic additives (more com-monly known as superplasticisers) have been used because of their superior per-formance in dispersing the fine particles in LCC systems at very low water additions. Polycarboxylate ethers (PCE) have been shown to be more effective deflocculants than polyacrylates (SPA) due to their struc-

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  • The Effect of Deflocculants on the Structure and Physical

    castables since these deflocculants create a double effect of dispersion electrostatic and spatial. Their action is much more effective than that of common deflocculants 4 13 2021 . In the laboratory there were performed the investigations of pH and electrical conductivity (EC) of aqueous solutions of well-known deflocculants such as

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  • Study of the Effect of Composite Deflocculant on Changes

    Results are presented for an X-radiographic study of a cement matrix with addition of a composition of two deflocculantssodium tripolyphosphate and polycarboxylate ester after hardening and heat treatment at 60110°C. The effect of composite deflocculant on changes in concrete physicomechanical properties and heat resistance after firing at 1000 and 1200°C is evaluated.

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  • The deflocculation of kaolin suspensionsthe effect of

    The objective of this work is to study systematically the effect of additives on rheological behavior of kaolin suspensions. The results of viscosity measurements carried out for inorganic (five different electrolytes) and organic (one polyelectrolyte at three molecular weights) additives all widely used as deflocculants are presented.

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  • The Effect of Deflocculants on the Structure and CORE

    The study also evaluates the effect of content of deflocculants on duration of exothermal reaction in paste of castable with medium content of cement on formation of structure physical-mechanical properties of castable. it was established by means of compressive strength tests that the increase in content of sodium tripoliphosphate affects

    Get Price
  • The Effect of Deflocculants on the Structure and CORE

    The study also evaluates the effect of content of deflocculants on duration of exothermal reaction in paste of castable with medium content of cement on formation of structure physical-mechanical properties of castable. it was established by means of compressive strength tests that the increase in content of sodium tripoliphosphate affects

    Get Price
  • Effect of a Mixture of Different Types of Deflocculants on

    Nov 23 2017 · The effect of two deflocculants — sodium tripolyphosphate (PP) and Castament FS 20 (C1) based on polycarboxylate ester—effectively lowering the viscosity of cement paste and their mixtures on the structure of cement rock with microsilica after soaking at 65°C drying and firing was investigated. The mineral stratlingite forms additionally in the samples with C1 during soaking.

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  • The effect of nano-size additives on the electrical

    May 01 2010 · The effect of two different nano-size deflocculants on the electrical conductivity of suspension matrix and other properties of self-flowing low-cement high alumina castable is investigated. By the use of relations between self-flow and electrical conductivity–time the proper deflocculants and its optimum content for these refractory

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  • Proceedings of Unified International Technical Conference

    Difference in Dispersing Effect Between Organic and Inorganic Deflocculants in Castables 1355 Zaigeng Li Sanhua Zhang and Ningsheng Zhou Luoyang Institute of Refractories Research China Guotian Ye Luoyang Technology College China Effect of Curing on the Properties of Low-Cement and Cement-Free Castables 1363

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  • Deflocculants A Detailed OverviewDigitalfire

    At this point called "full deflocculation" viscosity reaches its minimum value and subsequent additions of deflocculants have an adverse effect. The most efficient compounds having deflocculant action for uses in ceramics are sodium silicate polyphosphates (pyrotripolytetrapolyetc.) and organic sodium and ammonium polyelectrolytes.

    Get Price
  • (PDF) CONTROL OF FORMULATION AND OPTIMISATION OF SELF

    The effect of deflocculants on the self-flow characteristics of ultra low-cement castables in Al2O3–SiC–C system. By Sasan Otroj and Mohammad Bahrevar. Low Cement High Alumina Castables Effect of Distribution Coefficients LOW CEMENT HIGH ALUMINA CASTABLES EFFECT OF DISTRIBUTION COEFFICIENTS A THESIS IN THE PARTIAL FULFILLMENT OF THE

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  • The effect of nano-size additives on the electrical

    May 01 2010 · The effect of two different nano-size deflocculants on the electrical conductivity of suspension matrix and other properties of self-flowing low-cement high alumina castable is investigated. By the use of relations between self-flow and electrical conductivity–time the proper deflocculants and its optimum content for these refractory

    Get Price

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