According to the present state of the industry of salt making in our country, some methods for saving energy were given.

From the visual angle of the history of science and technology, this paper probes into the factors influencing the salt making technology of bedding-watering-drying such as natural conditions, and wind direction, etc.

Salt incrustation often happens in heat exchange tubes of salt making evaporator.

In addition, refrigerator & heat pump may be combined with seawater desalination equipment and salt producing machines to construct a integrated system, it may be a desired way to solve some important problems for city development and public utilities.

Based on actual production of Yongda Company,the method,measure and achievement for the equipment of vacuum salt making,including production increasing,energy saving and consumption reducing were introduced.

This paper provides an overiew of scale prevention and scale removal method in vacuum salt making.

Based on practice,this paper analyses the merits and demerits of different processes of vacuum salt making with CaSO4 type brine and the development orientation in the future.

Under the background that the government is implementing the system reform of salt industry at present,this paper makes research on how to transform the resource advantage into marketing competitive advantage and the marketing strategy of salt making enterprises in huai'an by applying the theory of regional economics and marketing.

In the tentative testing of manufacturing of coal mine permissible ammonite, refined salt is used instead of raw salt and the roasting of raw salt is eliminated.