Ejercicios de yesos Flashcards

1
Q

Determinar el tipo de yeso

A

IP = 1.7 SO3 + H2O [Lo dice el BOE]

  • 75 - 80 YESO GRUESO
  • 80 - 85 YESO FINO
  • 85 - 90 YESO PREFABRICADO
  • >= 85 ESCAYOLA
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2
Q

¿H2O < 6%?

A

Posibilidad de que haya anhidrita

PROBLEMA

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3
Q

Pm H2O

A

h

18

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4
Q

Pm SiO2

A

p

60

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5
Q

Pm Al2O3

A

a

102

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6
Q

Pm Fe2O3

A

f

160

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7
Q

Pm CaO

A

c

56

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8
Q

MgO

A

m

40,3

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9
Q

Pm CO2

A

r

44

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10
Q

Pm SO3

A

s

80

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11
Q

%CO3Mg

A

2,1 m

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12
Q

% CO2 en CO3Mg

A

1.1 m

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13
Q

% CO3Ca

A

2.27 (r - 1.1m)

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14
Q

% CaO en CO3Ca

A

1.27 (r - 1.1m)

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15
Q

% (CaO)disp

A

% CaO = %(CaO)disp [sulfatos] + %CaO [CO3Ca]

% (CaO)disp = c - 1.27(r - 1.1m)

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16
Q

¿Excesos CaO / SO3?

A

(CaO)disp/SO3 = 0.7 ?¿

17
Q

Ni exceso ni defecto

A

s + c - 1.27(r - 1.1m) / h = 15.1 ?¿

  • Menor ⇒ exceso H2O
    • Semihidrato + Dihidrato**​
  • Mayor ⇒ defecto H2O
    • Semihidrato + Anhidrita
  • Igual ⇒ Semihidrato
18
Q

Defecto H2O

A
19
Q

Exceso H2O

A
20
Q

Bajo % Semihidrato

So4Ca * 1/2 H2O

A

Se trata de materia prima

21
Q

Exceso de CaO

A