title: ÐÐ±Ð¶Ð¸Ð³ ÑÐµÑ Ð½Ð¾Ð³ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð³Ð¸Ð¿ÑÐ° Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸ÐµÐ¼ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ° ÑÑÐ»ÑÑÐ°ÑÐ° ÐºÐ°Ð»ÑÑÐ¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Roasting technogenic gypsum to produce calcium sulfate anhydrite
Creators: name: ÐÐ½Ð´ÑÐµÐµÐ²Ð°, ÐÐ»ÐµÐºÑÐ°Ð½Ð´ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Ð°Ð½Ð³Ð¸Ð´ÑÐ¸Ñ ÑÑÐ»ÑÑÐ°ÑÐ° ÐºÐ°Ð»ÑÑÐ¸Ñ
Ð²ÑÐ¶ÑÑÐ¸Ðµ Ð²ÐµÑÐµÑÑÐ²Ð°
Ð³Ð¸Ð¿Ñ
Ð¾Ð±Ð¶Ð¸Ð³
Ð·Ð°ÐºÐ»Ð°Ð´Ð¾ÑÐ½ÑÐµ ÑÐ¼ÐµÑÐ¸
calcium sulfate anhydrite
binding substances
gypsum
roasting
stacking mixtures

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ Ð¾Ð±Ð¶Ð¸Ð³Ð° Ð´Ð²ÑÐ²Ð¾Ð´Ð½Ð¾Ð³Ð¾ Ð³Ð¸Ð¿ÑÐ° Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸ÐµÐ¼ Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ°, Ð¿Ð¾Ð´Ð±Ð¾Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð¾Ð±Ð¶Ð¸Ð³Ð°. Ð¦ÐµÐ»ÑÑ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ° (Ð¿Ð¾ÑÑÐµÐ´ÑÑÐ²Ð¾Ð¼ Ð¾Ð±Ð¶Ð¸Ð³Ð° ÑÐµÑÐ½Ð¾Ð³ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð³Ð¸Ð¿ÑÐ°) Ð¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÐµÐ³Ð¾ Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ° Ð·Ð°ÐºÐ»Ð°Ð´Ð¾ÑÐ½ÑÑ ÑÐ¼ÐµÑÐµÐ¹ Ð²Ð·Ð°Ð¼ÐµÐ½ Ð¿ÑÐ¸ÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ°. ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1. ÐÐ½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐµÐ¹ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ Ð¾ ÑÐ¾ÐµÐ´Ð¸Ð½ÐµÐ½Ð¸ÑÑ ÑÐ¸ÑÑÐµÐ¼Ñ CaSO4-H2O, ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÑ ÑÐ¿Ð¾ÑÐ¾Ð±Ð°Ñ Ð¾Ð±Ð¶Ð¸Ð³Ð° Ð³Ð¸Ð¿ÑÐ°, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ Ð¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ° Ð² Ð·Ð°ÐºÐ»Ð°Ð´Ð¾ÑÐ½ÑÑ ÑÐ¼ÐµÑÑÑ. 2. ÐÐ°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾ Ð¾Ð±Ð¶Ð¸Ð³Ñ ÑÐµÑÐ½Ð¾Ð³ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð³Ð¸Ð¿ÑÐ° Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸ÐµÐ¼ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ° ÑÑÐ»ÑÑÐ°ÑÐ° ÐºÐ°Ð»ÑÑÐ¸Ñ. 3. Ð¢ÐµÑÐ½Ð¸ÐºÐ¾-ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ°. Ð Ð°Ð±Ð¾ÑÐ° Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð½Ð° Ð±Ð°Ð·Ðµ ÐÐÐ Â«ÐÐ½ÑÑÐ¸ÑÑÑ ÐÐ¸Ð¿ÑÐ¾Ð½Ð¸ÐºÐµÐ»ÑÂ», Ð³Ð´Ðµ ÑÐ¾Ð±Ð¸ÑÐ°Ð»Ð°ÑÑ Ð·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð°Ñ ÑÐ°ÑÑÑ ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð°: ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾ÑÐ°Ð·Ð¾Ð²Ð¾Ð³Ð¾ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð³Ð¸Ð¿ÑÐ°, Ð°Ð½Ð°Ð»Ð¸Ð·Ð° ÐºÑÑÐ¿Ð½Ð¾ÑÑÐ¸ ÑÐ°ÑÑÐ¸Ñ Ð¸ÑÑÐ¾Ð´Ð½Ð¾Ð¹ Ð³Ð¸Ð¿ÑÐ¾Ð²Ð¾Ð¹ Ð¿ÑÐ»ÑÐ¿Ñ, ÑÐµÐ½ÑÐ³ÐµÐ½Ð¾ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¼Ð¸ÐºÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð°. ÐÑÐ»Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÑ Ñ Ð¾Ð±Ð¶Ð¸Ð³Ð¾Ð¼ Ð³Ð¸Ð¿ÑÐ° Ð² ÐºÐ°Ð¼ÐµÑÐ½Ð¾Ð¹ Ð¸ Ð²ÑÐ°ÑÐ°ÑÑÐµÐ¹ÑÑ Ð¿ÐµÑÐ°Ñ. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð±ÑÐ»Ð° Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð° ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ñ Ð¾Ð±Ð¶Ð¸Ð³Ð° ÑÐµÑÐ½Ð¾Ð³ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð³Ð¸Ð¿ÑÐ° Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸ÐµÐ¼ Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ°, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ ÑÐ°ÑÑÐµÑÑ Ð¸ ÑÑÐ°ÑÐ¸ÑÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ. ÐÐ°ÑÐµÑÐ¸Ð°Ð»Ñ, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÐµ Ð¾Ð±Ð¶Ð¸Ð³Ð¾Ð¼ ÑÐµÑÐ½Ð¾Ð³ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð³Ð¸Ð¿ÑÐ°, Ð¼Ð¾Ð³ÑÑ Ð±ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ñ Ð² ÑÐ¾ÑÑÐ°Ð²Ðµ Ð·Ð°ÐºÐ»Ð°Ð´ÐºÐ¸ Ð¸ ÑÐ´Ð¾Ð²Ð»ÐµÑÐ²Ð¾ÑÑÑÑ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼ Ð¿Ð¾ Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ¸. ÐÐ°Ð¸Ð»ÑÑÑÐ¸Ð¹ ÑÐµÐ·ÑÐ»ÑÑÐ°Ñ Ð¿Ð¾ÐºÐ°Ð·Ð°Ð» ÑÐ¾ÑÑÐ°Ð² Ñ Ð°Ð½Ð³Ð¸Ð´ÑÐ¸ÑÐ¾Ð¼, Ð¾Ð±Ð¾Ð¶Ð¶ÐµÐ½Ð½ÑÐ¼ Ð² ÑÐµÑÐµÐ½Ð¸Ð¸ 60 Ð¼Ð¸Ð½ÑÑ Ð¿ÑÐ¸ 850Â°Ð¡, Ð¿ÑÐ¾Ð´ÐµÐ¼Ð¾Ð½ÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð² ÑÐ¶Ðµ Ð½Ð° 28 ÑÑÑÐºÐ¸ Ð¼Ð°ÑÐ¾ÑÐ½ÑÑ Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÑ, ÑÑÐ¾ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÐµÑ ÑÐ´ÐµÐ»Ð°ÑÑ Ð²ÑÐ²Ð¾Ð´ Ð¾ Ð¿ÑÐ¾ÑÐ²Ð»ÐµÐ½Ð¸Ð¸ Ð²ÑÑÐ°Ð¶ÐµÐ½Ð½ÑÑ Ð²ÑÐ¶ÑÑÐ¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ². ÐÐ³Ð¾ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ Ð² Ð·Ð°ÐºÐ»Ð°Ð´Ð¾ÑÐ½ÑÑ ÑÐ¼ÐµÑÑÑ Ð¼Ð¾Ð¶ÐµÑ Ð±ÑÑÑ ÑÐµÐ°Ð»ÑÐ½Ð¾Ð¹ Ð°Ð»ÑÑÐµÑÐ½Ð°ÑÐ¸Ð²Ð¾Ð¹ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÐ¼ÐµÐ½ÑÐ°, ÑÑÐ¾ Ð¿ÑÐµÐ´Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÐµÑ ÐµÐ³Ð¾ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð² ÑÐ¾Ð¼ ÑÐ¸ÑÐ»Ðµ Ð² Ð±ÐµÑÑÐµÐ¼ÐµÐ½ÑÐ½ÑÑ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ ÑÐ¾ÑÑÐ°Ð²Ð°Ñ Ð² ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð°ÑÑÐ¾Ð²ÑÑ Ð¸ÑÐ¿ÑÑÐ°Ð½Ð¸Ð¹.
description: The object of the study is the technological process of firing gypsum dihydrate to produce artificial anhydrite, selection of the optimal firing temperature. The purpose of the work is to study the technology for producing artificial anhydrite (by firing technogenic gypsum) and using it as a component of filling mixtures instead of natural anhydrite.Â  Problems that were solved during the study: 1. Analysis of existing information on compounds of the CaSO4-H2O system, modern methods of firing gypsum, obtaining and using anhydrite in filling mixtures. 2. Laboratory research on firing technogenic gypsum to produce calcium sulfate anhydrite. 3. Feasibility study of the technology for producing artificial anhydrite. The work was carried out on the basis of LLC âGipronickel Instituteâ, where a significant part of the factual material was collected: the results of X-ray phase analysis of gypsum, analysis of particle size of the original gypsum pulp, X-ray spectral microanalysis. Experiments were carried out with the firing of gypsum in chamber and rotary kilns. As a result, the technology of firing technogenic gypsum to produce artificial anhydrite was analyzed, calculations and statistical processing of experimental data were carried out. Materials obtained by firing technogenic gypsum can be used as part of the backfill and meet the strength requirements. The best result was shown by a composition with anhydrite fired for 60 minutes at 850Â°C, demonstrating brand strength already on the 28th day, which allows us to conclude that it has pronounced astringent properties. Its use in filling mixtures can be a real alternative to the use of cement, which predetermines its use, including in cementless experimental compositions as part of mass testing.