METHOD FOR DETERMINING COMPOSITION OF CONDENSED-EXPANDED TYPE FRIABLE SYSTEMS Russian patent published in 2005 - IPC

FIELD: technologies for testing properties of materials.

SUBSTANCE: in method for determining compositions of friable systems of condensed-expanded type in fractions with core sizes D₁>D₂>D₃>D₄>D₅ when D₂/D₁,…,D₅/D₄ greater than 0.155 volumes of fractions V_D1, V_D2, V_D3, V_D4 having core sizes D₁, D₂, D₃, D₄ respectively, m³, are determined, as well as core material denseness, average core size, value of emptiness V_eD1 of fraction with core size D₁, condensation grade coefficients Y₁, Y₂, Y₃, of fraction with core size D₁ by fraction with core size D₂, mixture of condensed type on basis of fraction (D₁+D₂) with average sizes of cores D_av.sm2 by fraction with core size D₃, mixture of condensed type on basis of fractions (D₁+D₂+D₃) with average core size D_av.sm3 by fraction with core size D₄ respectively, fractions with large core sizes are used for receiving mixtures of condensed type, condensed type mixtures volumes V_sm2, V_sm3, V_sm4,_{are determined on basis of fractions (D1+D2), (D1+D2+D3) and (D1+D2+D3+D4) respectively, m³, emptiness value Vemp2, Vemp3, of condensed type mixtures on basis of fraction (D1+D2) and (D1+D2+D3) respectively, separation of cores in condensed type mixture is performed by fractions with lesser core sizes, separation coefficient α1, α2, α3, value is determined, for mixture cores on basis of fractions (D1+D2) with core sizes D3, mixture cores on basis of fractions (D1+D2+D3) with core sizes D4, mixture cores on basis of fractions (D1+D2+D3+D4) with core sizes D5, respectively, and compositions of friable condensed-expanded type are determined from formulae in following order: composition of condensed type binary mixture on basis of fractions (D1+D2) from formulae m³, m³m³, Y1=1-D2/D1, 1 m³ of said condensed type binary mixture Vem2=VD1+VD2=1m³ for preparation of ternary condensed-expanded type mixture, composition of which is determined from formulae composition of ternary condensed type mixture is determined on basis of fractions (D1+D2+D3) from formulae 1 m³ of said ternary condensed type mixture is used for preparation of quaternary mixture of condensed-expanded type, composition of which is determined from formulae composition of quaternary condensed type mixture is determined on basis of fractions (D1+D2+D3+D4) from formulae Ysm3=1 m³, 1 m³ of quaternary condensed type mixture is used for preparation of quinary condensed-expanded type mixture, composition of which is determined from formulae}

EFFECT: higher efficiency.

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