Marine Salt Industry And Salt Chemistry


yy5.gif (30782 bytes)Summary

During 1993-1995, the national total output of salt was 3,014,400 tons, the average output annually was 17,671,500 tons, with the total output of salt holding the 2nd position in the world, among which sea salt industry produced 59,384,000 tons of salt in three years, with annual production 19,795,000 tons. The output of sea salt still held the 1st position all over the world (table 1). The three-year high output of the sea salt resulted in the situation of supply exceeding demand. In 1995, the production of sea salt in national sea salt areas is as follows:

The North Salt Production Region:

Tianjin Municipality: 2,214,000 Tons; Guangdong Province: 3,338,000 Tons; Liaoning Province: 2,109,000 Tons; Jiangsu Province: 2,271,000 Tons; Shandong Province: 5,104,000 Tons.

The South Salt Production Region:

Zhejiang Province: 668,000t; Fujian Province: 723,000t; Guangdong Province: 256,000t; Guangxi Autonomous Region, 76,000t.

In 1995, the chemical products of sea salt reached 60 kinds and the output reached 600,000t. With regard to the aquatic farming in the salt pan, the shrimp industry withered because of the spread of shrimp disease, and turned to breed the fish and shellfish. According to the statistics data of the coastal marine management units, the national annual output of the sea salt industry in 1993, 1994 and 1995 is 36.84 billion RMB and 47.7 billion RMB respectively (among which the added value in 1995 is 19.78 billion RMB, the lump sum tax value is 562.82 million RMB). The number of the staff who engage in this industry in 1993,1994 and 1995 is 370000, 148300 and 147000 respectively.

 

Table 1. The Annual Output of Sea Salt during 1993-1995

Unit: 10,000t

Year

1993

1994

1995

Nation Wide

2 114.6

2 050.3

1 773.5

North Salt Production Region

1 903.5

1 839.8

1 584.7

South Salt Production Region

211.1

210.5

188.8

 

Table 2. 1995 Coastal Sea Salt Production Area

Unit: hm2; t/hm2

Region

Total Area

Production Area

Others Area

Production

North

Total

329 001

330 736

54 144

46.7

Liaoning

66 977

61 760

5 217

34.0

Shandong

118 673

96 062

22 611

53.7

Hebei

78 452

75 768

2 684

43.9

Tianjin

39 261

37 933

1 328

58.2

Jiangsu

89 517

67 212

22 304

44.9

South

Total

50 521

39 349

1 172

47.7

Zhejiang

13 385

11 329

2 056

59.1

Fujian

16 524

12 210

4 306

50.9

Guangdong

11 190

8 271

2 918

31.4

Guangxi

4 997

3 626

1 371

20.9

Hainan

4 425

3 905

520

40.9

 

Table 3. 1993-1995 Output of Key Salt Chemistry Products of Sea Salt

Region Unit: T

Year

Region

Potassium Chloride

Bromidem

Rough Riter

Anhydrous Natrium Sulfate

1993

Liaoning

7 428

620

62 942

15 019

Sandong

2 725

18 566

40 527

15 383

Hebei

6 386

1 611

53 467

/

Tianjin

15 513

2 443

125 126

42

Jiangsu

9 157

1 011

87 327

/

Zhejiang

88

4

2 052

/

Guangdong

/

/

492

/

Total

41 297

24 255

371 933

30 444

1994

Liaoning

7 274

556

53 753

15 071
Sandong

608

25 811

33 291

10 558
Hebei

6  302

1 423

55 866

/
Tianjin

17 419

2 543

137 024

532
Jiangsu

12 081

848

103 813

/

Total

43 684

31 181

383 747

26 161

1995

Liaoning

4 429

326

27 648

7 531
Sandong

3 320

2 553

36 050

13 409
Hebei

5 323

1 057

40 040

/
Tianjin

17 480

29 154

138 776

735
Jiangsu

11 627

750

77 68

/

Total

42 179

33 840

320 20

21 675