Adsorption type inorganic binding fiber paper and preparation method thereof

The invention provides adsorption type inorganic binding fiber paper and a preparation method thereof. The fiber paper is prepared from the following raw materials in parts by weight: 40-75 parts of inorganic fibers, 10-40 parts of an adsorbent, 5-17 parts of an inorganic binding agent, 2-5 parts of a toughening agent and 1-5 parts of a filter aid, wherein the toughening agent is prepared by reaction of metal oxide and inorganic acid. According to the invention, a salt substance is generated through the reaction of a metal oxide and an inorganic acid, the metal salt is in the form of a continuous phase which is of a scaly structure and uniformly wraps the surface of the fiber, the toughness of the inorganic fiber is greatly improved due to the existence of the scaly structure of the continuous phase, metal cations form a highly polymerized polyhydroxy compound in water at the same time, colloidal particles of an inorganic binding agent can be adsorbed under the action of an adsorbent,the rigid strength brough