Abstract: To provide a highly bio-soluble fibrous shaped refractory article which can develop desired heat resistance without containing ceramic fibers such as aluminum silicate fibers, alumina powder and silica powder and can be provided at a low production cost and a low product cost. An inorganic fibrous shaped refractory article comprising 2 to 95 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more, 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder, and in particular, it is an inorganic fibrous refractory article wherein the inorganic powder having the needle-like crystal structure has an average length of 1 to 3000 ?m and an aspect ratio of 1 to 1000.

Abstract: An inorganic fibrous shaped refractory article having a high bio-solubility which is capable of exhibiting a desired heat resistance without containing expensive ceramic fibers, alumina powder and silica powder can be provided at a low production cost and with a low product price. An inorganic fibrous shaped refractory article includes 2 to 95 mass % of rock wool, 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder. Preferably, in the an inorganic fibrous shaped refractory article, the inorganic powder having a needle-like crystal structure has an average length of 1 to 3000 ?m and an aspect ratio of 1 to 1000, and more preferably the inorganic powder having a needle-like crystal structure is wollostonite powder or sepiolite powder.

Abstract: Inorganic fiber paper including bio-soluble inorganic fibers which have been subjected to a heat treatment and a binder. A method for producing inorganic fiber paper including: the first step of subjecting amorphous bio-soluble inorganic fibers to a heat treatment; and the second step of making paper comprising the heat-treated bio-soluble inorganic fibers and a binder. Equipment for heating and/or thermal insulation which includes the inorganic fiber paper.

Abstract: A shaped article including inorganic fibers including SiO2 and an alkaline earth metal, wherein the shaped article is treated with a hardening agent.

Abstract: A wet blanket obtained by impregnating a blanket including bio-soluble inorganic fibers with a colloidal silica liquid. A cured blanket obtained by curing the wet blanket.

Abstract: A method of producing inorganic fibers includes heating and melting an inorganic raw material that includes 70 wt % or more of silica and 10 wt % to 30 wt % of magnesia and calcia in total in a container to obtain a melt having a melt viscosity of 15 poise or less, supplying the melt to a rotor that rotates at an acceleration of 70 km/s2 or more, drawing the melt due to a centrifugal force caused by rotation of the rotor to obtain fibers, blowing the fibers off by blowing air around the rotor, and collecting the fibers to obtain fibers having an average fiber diameter of 5 ?m or less.

Abstract: Inorganic fiber paper includes first biosoluble inorganic fibers having an average fiber diameter of 3 to 7 ?m, second biosoluble inorganic fibers having an average fiber diameter of 2 to 3 ?m, and a binder, the average fiber diameter of the second biosoluble inorganic fibers being smaller than that of the first biosoluble inorganic fibers.

Abstract: An adhesive for inorganic fibers including SiO2, CaO and Al2O3 within a range excluding the range I defined by the following points A, 8, 18, 19 and 20 in the SiO2—Al2O3—CaO state diagram shown in FIG. 1, and including no zeolite. Point A: SiO2 (0%), Al2O3 (100%), CaO (0%): Point 8: SiO2 (20.8%), Al2O3 (79.2%), CaO (0%): Point 18: SiO2 (46.3%), Al2O3 (35.8%), CaO (17.9%): Point 19: SiO2 (31.5%), Al2O3 (53.6%), CaO (14.9%): Point 20: SiO2 (25.2%), Al2O3 (57.5%), CaO (17.

Abstract: An inorganic fibrous shaped body including partially-crystallized bio-soluble inorganic fibers and an inorganic binder, wherein the bio-soluble inorganic fibers are SiO2/MgO fibers or SiO2/CaO fibers having the following composition: [SiO2/MgO fibers] SiO2 66 to 82 wt % CaO 1 to 9 wt % MgO 10 to 30 wt % Al2O3 3 wt % or less [SiO2/CaO fibers] SiO2 66 to 82 wt % CaO 10 to 34 wt % MgO 3 wt % or less Al2O3 5 wt % or less.