Magnezijev oksid iz morske vode - Kemijsko-tehnološki fakultet
Magnezijev oksid iz morske vode - Kemijsko-tehnološki fakultet Magnezijev oksid iz morske vode - Kemijsko-tehnološki fakultet
Tablica 13. Visina taloga, Z (mm), u ovisnosti o vremenu sedimentacije, t (min), uz različite dodatke flokulanta 831A, pri 80 %-tnom taloženju magnezijeva hidroksida iz morske vode. cm 3 831A / 500 cm 3 morske vode t /min 3,8 3,9 4,0 4,1 4,2 4,3 4,4 Z / mm 0 157,0 157,0 157,0 157,0 157,0 157,0 157.,0 1 38,0 42,0 39,0 38,0 36,0 38,0 40,0 2 30,0 32,0 32,0 30,0 28,0 29,0 31,0 3 26,0 28,0 28,5* 28,0 26,0* 26,0* 28,0 4 25,0* 25,5* 25,0 26,0* 24,0 25,0 25,5* 5 23,0 24,5 24,0 24,0 23,0 24,0 24,0 6 22,0 24,0 23,0 23,0 22,0 23,0 23,0 7 21,0 23,0 22,0 22,0 22,0 22,0 23,0 8 20,0 22,5 22,0 22,0 21,0 21,5 22,5 9 20,0 22,5 22,0 21,5 20,0 21,0 22,0 10 20,0 22,0 21,0 21,0 20,0 21,0 22,0 11 20,0 22,0 21,0 20,5 20,0 20,5 21,5 12 20,0 22,0 20,0 20,0 19,5 20,5 21,5 13 19,5 21,5 20,0 20,0 19,5 20,0 21,5 14 19,5 21,5 20,0 19,5 19,5 20,0 21,0 15 19,5 21,0 19,5 19,5 19,5 20,0 21,0 16 19,5 21,0 19,5 19,5 19,0 20,0 20,5 17 19,0 21,0 19,5 19,0 19,0 19,5 20,5 18 19,0 20,5 19,5 19,0 19,0 19,5 20,0 19 19,0 20,5 19,0 18,5 18,5 19,5 20,0 20 19,0 20,0 19,0 18,5 18,5 19,0 20,0 21 18,5 20,0 19,0 18,5 18,5 19,0 19,5 22 18,5 19,5 19,0 18,5 18,5 19,0 19,5 23 18,5 19,5 19,0 18,0 18,5 19,0 19,5 24 18,5 19,5 18,5 18,0 18,5 18,5 19,5 25 18,5 19,0 18,5 18,0 18,0 18,5 19,0 26 18,5 19,0 18,5 18,0 18,0 18,0 19,0 27 18,5 19,0 18,0 17,5 18,0 18,0 19,0 28 18,5 18,5 18,0 17,5 18,0 18,0 19,0 29 18,0 18,5 18,0 17,5 17,5 18,0 19,0 30 18,0 18,5 18,0 17,5 17,5 18,0 18,5 35 18,0 18,5 17,5 17,5 17,5 18,0 18,5 40 18,0 18,0 17,5 17,0 17,5 17,5 18,5 45 17,5 18,0 17,0 17,0 17,5 17,5 18,5 50 17,5 18,0 17,0 17,0 17,0 17,5 18,0 55 17,5 18,0 16,5 17,0 17,0 17,5 18,0 60 17,5 18,0 16,5 17,0 17,0 17,5 18,0 * bistra otopina iznad taloga magnezijeva hidroksida 67
Kod navedenih ispitivanja masena koncentracija čvrste faze u suspenziji iznosila je 5,768 g dm -3 magnezijeva hidroksida. Razlike u ponašanju tijekom pojedine serije ispitivanja posljedica su različite količine dodanog flokulanta 831A. 45 43 41 39 37 35 3,8 cm3 3,9 cm3 4,0 cm3 4,1 cm3 4,2 cm3 4,3 cm3 4,4 cm3 33 Z / mm 31 29 27 25 23 21 19 17 15 0 5 10 15 20 25 30 35 40 45 50 55 60 t / min Slika 17. Ovisnost visine taloga, Z, o vremenu sedimentacije, t, pri nestehiometrijskom 80 %-tnom načinu taloženja, uz različite količine dodanog flokulanta 831A Iz grafičkog prikaza (slika 17) ovisnosti visine taloga magnezijeva hidroksida o vremenu sedimentacije za sve ispitivane količine flokulanta 831A (3,8; 3,9; 4,0; 4,1; 4,2; 4,3; 4,4 cm 3 ) pri nestehiometrijskom 80 %-tnom načinu taloženja dolomitnim vapnom, uočava se da su postignuti optimalni rezultati uz dodatak 4,1 cm 3 flokulanta 831A / 500 cm 3 morske vode. 68
- Page 23 and 24: Slika 4. Snimak planeta Zemlje (pog
- Page 25 and 26: a) b) Slika 7. Ledeni pokrivač: a)
- Page 27 and 28: Zona 5 − Duboki “raspršeni”
- Page 29 and 30: Od ukupne površine Zemlje (510 100
- Page 31 and 32: Za ovu količinu iona potrebno je i
- Page 33 and 34: Procesi koji mogu izazvati veće pr
- Page 35 and 36: Slika 11. Izmjena tvari u moru 2.1.
- Page 37 and 38: Pri eksploataciji mineralnih sirovi
- Page 39 and 40: Tablica 6 − nastavak Količina el
- Page 41 and 42: se djelomično slobodni, a djelomi
- Page 43 and 44: U novije vrijeme, primjenom kondukt
- Page 45 and 46: Tablica 10 − nastavak Element Kon
- Page 47 and 48: Tablica 11. Sadržaji i ponašanje
- Page 49 and 50: 2.2. EKSPLOATACIJA MINERALA OTOPLJE
- Page 51 and 52: vatrostalnih materijala na osnovi m
- Page 53 and 54: morskom vodom. U Cumberlandu kod Ha
- Page 55 and 56: Zaostali karbonat iz vapna imat će
- Page 57 and 58: − obrada magnezijeva hidroksida n
- Page 59 and 60: CaCO 3 (s) i do taloženja istog,
- Page 61 and 62: Mehanizam nastajanja taloga magnezi
- Page 63 and 64: Taloženje se može provesti i uz v
- Page 65 and 66: koloidne čestice kroz disperznu sr
- Page 67 and 68: hidroksida. Naime, kod dužeg traja
- Page 69 and 70: že pomiješati sa suspenzijom koja
- Page 71 and 72: Flokulanti se meñusobno razlikuju
- Page 73: 140 cm 3 ↔ 1 g flokulanta flokal-
- Page 77 and 78: Tablica 14. Visina taloga, Z (mm),
- Page 79 and 80: Z 1 − visina na koju se talog dob
- Page 81 and 82: Svakoj visini Z o odgovara odreñen
- Page 83 and 84: 7 6 5 3,9 cm3 ∆ Z / mm 4 3 2 1 0
- Page 85 and 86: 6 5 4,3 cm3 ∆ Z / mm 4 3 2 1 0 0
- Page 87 and 88: Usporedba s ranije ispitivanim flok
- Page 89 and 90: 100 g praškastog flokulanta ……
- Page 91 and 92: Slijedi da su koncentracija i prisu
- Page 93 and 94: Naime, zona D je pod tlakom i u njo
- Page 95 and 96: Brzina taloženja, v s (nagib tange
- Page 97 and 98: gdje je: V& ⋅ γ = V& ⋅ γ (35)
- Page 99 and 100: 2.5. NESTEHIOMETRIJSKI NAČIN TALO
- Page 101 and 102: 2.6. BOROV (III) OKSID U MAGNEZIJEV
- Page 103 and 104: to da etilen-glikol nije djelotvora
- Page 105 and 106: nastaviti sa zaluženom destilirano
- Page 107 and 108: meñučestičnih veza. Uslijed povi
- Page 109 and 110: strukturno stanje i geometrija prah
- Page 111 and 112: granicama zrna tijekom sinteriranja
- Page 113 and 114: sustava, koja sadrži manju slobodn
- Page 115 and 116: Slika 38. Osnovne promjene koje nas
- Page 117 and 118: Slika 39. Prikaz šest mogućih meh
- Page 119 and 120: Zbog toga se rezultati fundamentaln
- Page 121 and 122: magnezijeva oksida ne ovise samo o
- Page 123 and 124: Ovisnost zgušnjavanja ispresaka ma
Tablica 13. Visina taloga, Z (mm), u ovisnosti o vremenu sedimentacije, t (min), uz<br />
različite dodatke flokulanta 831A, pri 80 %-tnom taloženju magnezijeva hidr<strong>oksid</strong>a <strong>iz</strong><br />
<strong>morske</strong> <strong>vode</strong>.<br />
cm 3 831A / 500 cm 3 <strong>morske</strong> <strong>vode</strong><br />
t /min 3,8 3,9 4,0 4,1 4,2 4,3 4,4<br />
Z / mm<br />
0 157,0 157,0 157,0 157,0 157,0 157,0 157.,0<br />
1 38,0 42,0 39,0 38,0 36,0 38,0 40,0<br />
2 30,0 32,0 32,0 30,0 28,0 29,0 31,0<br />
3 26,0 28,0 28,5* 28,0 26,0* 26,0* 28,0<br />
4 25,0* 25,5* 25,0 26,0* 24,0 25,0 25,5*<br />
5 23,0 24,5 24,0 24,0 23,0 24,0 24,0<br />
6 22,0 24,0 23,0 23,0 22,0 23,0 23,0<br />
7 21,0 23,0 22,0 22,0 22,0 22,0 23,0<br />
8 20,0 22,5 22,0 22,0 21,0 21,5 22,5<br />
9 20,0 22,5 22,0 21,5 20,0 21,0 22,0<br />
10 20,0 22,0 21,0 21,0 20,0 21,0 22,0<br />
11 20,0 22,0 21,0 20,5 20,0 20,5 21,5<br />
12 20,0 22,0 20,0 20,0 19,5 20,5 21,5<br />
13 19,5 21,5 20,0 20,0 19,5 20,0 21,5<br />
14 19,5 21,5 20,0 19,5 19,5 20,0 21,0<br />
15 19,5 21,0 19,5 19,5 19,5 20,0 21,0<br />
16 19,5 21,0 19,5 19,5 19,0 20,0 20,5<br />
17 19,0 21,0 19,5 19,0 19,0 19,5 20,5<br />
18 19,0 20,5 19,5 19,0 19,0 19,5 20,0<br />
19 19,0 20,5 19,0 18,5 18,5 19,5 20,0<br />
20 19,0 20,0 19,0 18,5 18,5 19,0 20,0<br />
21 18,5 20,0 19,0 18,5 18,5 19,0 19,5<br />
22 18,5 19,5 19,0 18,5 18,5 19,0 19,5<br />
23 18,5 19,5 19,0 18,0 18,5 19,0 19,5<br />
24 18,5 19,5 18,5 18,0 18,5 18,5 19,5<br />
25 18,5 19,0 18,5 18,0 18,0 18,5 19,0<br />
26 18,5 19,0 18,5 18,0 18,0 18,0 19,0<br />
27 18,5 19,0 18,0 17,5 18,0 18,0 19,0<br />
28 18,5 18,5 18,0 17,5 18,0 18,0 19,0<br />
29 18,0 18,5 18,0 17,5 17,5 18,0 19,0<br />
30 18,0 18,5 18,0 17,5 17,5 18,0 18,5<br />
35 18,0 18,5 17,5 17,5 17,5 18,0 18,5<br />
40 18,0 18,0 17,5 17,0 17,5 17,5 18,5<br />
45 17,5 18,0 17,0 17,0 17,5 17,5 18,5<br />
50 17,5 18,0 17,0 17,0 17,0 17,5 18,0<br />
55 17,5 18,0 16,5 17,0 17,0 17,5 18,0<br />
60 17,5 18,0 16,5 17,0 17,0 17,5 18,0<br />
* bistra otopina <strong>iz</strong>nad taloga magnezijeva hidr<strong>oksid</strong>a<br />
67
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