Abstract: A method of processing lead sulphate or lead-zinc sulphide ores, or sulphide concentrates, or mixtures thereof, residing in that said lead sulphide or lead-zinc sulphide ores, or sulphide concentrates, or mixtures thereof are subjected to roasting-and-reduction in an atmosphere of industrial oxygen in the presence of fluxes with addition of recycle products to a desulphurization of 85 to 100%, with the obtaining of a molten slag, in which the weight ratio of the sum of silicon dioxide and aluminium oxide to ferrous oxide is 0.67-1.22:1 and that of the sum of calcium oxide and magnesium oxide to ferrous oxide is 0.22-0.75:1, with subsequent separation of lead and zinc by way of a selective reduction of lead oxides to metal in the course of filtration of the resulting dispersed slag at a temperature of 1100.degree. to 1400.degree. C. through a bed of a carboniferous material.

Abstract: The method for preparing furfuryl alcohol comprises hydrogenation of furfural in the presence of a mixture of a copper-chromite catalyst promoted with oxides of alkali-earth metals, and ceramic material. This mixture is disposed in four beds at a ratio between the catalyst and the ceramic material of 1:2 in the first bed, 1:1 in the second bed, 2:1 in the third bed and 2.5:1 in the fourth bed downstream of the flow of the mixture of furfural and hydrogen. The hydrogenation process is conducted at an elevation of temperature from 50.degree. to 140.degree. C. under a pressure of from 60 to 65 atm, followed by the introduction of monoethanolamine or hydrazine hydrate into the resulting catalyzate.